• Photo - Flats on First Apartments

Flats on First Apartments

21 Charles St, Cambridge, MA 02141

Floor Plan Summary
Monthly RentBedroomsBathrooms
$3,468 - $9,359Studio - 3 1 - 2

Pricing and Floor Plans

S2

$3,468 - $4,518
Studio, 1 Bath
584 Sq. Ft.

Show Floor Plan Details

1 Rental Available
Unit
Price
Sq. Ft.
Available
612B
$3,468
593
Now

S1

Call for Rent
Studio, 1 Bath
439 Sq. Ft.

Show Floor Plan Details

Aug. 24
Unit
Price
Sq. Ft.
Available
405B
440
8/24/25

A1

Call for Rent
1 Bed, 1 Bath
699 Sq. Ft.

Show Floor Plan Details

Oct. 5
Unit
Price
Sq. Ft.
Available
303C
699
10/5/25

B1

$5,541 - $8,750
2 Beds, 2 Baths
977 Sq. Ft.

Show Floor Plan Details

Aug. 7
Unit
Price
Sq. Ft.
Available
305C
$5,541
992
8/7/25

C1

$7,040 - $9,359
3 Beds, 2 Baths
1,303 Sq. Ft.

Show Floor Plan Details

Sep. 4
Unit
Price
Sq. Ft.
Available
221B
$7,040
1,305
9/4/25
* Price shown is base rent and may not include non-optional fees and utilities. View Fees and Policies for details. Price, availability, fees, and any applicable rent special are subject to change without notice. * Square footage definitions vary. Displayed square footage is approximate.

Map of Flats on First

Loading...
The Closest Campus to Flats on First Apartments is Massachusetts Institute of Technology

Nearby Colleges and Universities

School

Commute Time (Distance)

MIT

Drive: 3 min (1.4 mi)

Suffolk University

Drive: 4 min (1.6 mi)

Bunker Hill Community College

Drive: 4 min (2.1 mi)

Emerson College

Drive: 6 min (2.1 mi)

Details

Lease Term Options

  • 6 - 12 Month Leases

Property Information

  • Built in 2021
  • 136 units / 5 stories

Fees and Policies

The fees below are based on community-supplied data and may exclude additional fees and utilities.

Cats Allowed

  • Monthly Pet Rent
    $0
  • One Time Fee
    $0
  • Pet Deposit
    $0
  • Weight Limit
    100 lbs
  • Pet Limit
    2

Comments

Dogs and Cats

Dogs Allowed

  • Monthly Pet Rent
    $0
  • One Time Fee
    $0
  • Pet Deposit
    $0
  • Weight Limit
    100 lbs
  • Pet Limit
    2

Comments

Dogs and Cats

Property Highlights

Flats on First embodies the best of boutique living, combining the luxuries of a modern apartment community with the comforts of a close-knit neighborhood. Come home to a place of sophistication and serenity in East Cambridge.

  • Game Room
  • Outdoor Lounges With Fire Pits
  • Pet Friendly
  • Schlage Smart Locks
  • Butterflymx Intercom System
  • Grilling And Al Fresco Dining
  • Open Air Amphitheater
  • Open Floor Plans
  • Roof Deck With City Views
  • Balconies*

Apartment Features

  • Balcony
  • Deck
  • Intercom
  • Kitchen
  • Quartz Countertops
  • Vinyl Flooring
  • Walk-In Closets
  • Wi-Fi

Community Features

  • Bicycle Storage
  • Controlled Access
  • Courtyard
  • Fitness Center
  • Gameroom
  • Lounge
  • Package Service

Area Scores

Walk Score ®

Walker's Paradise95 / 100

Transit Score ®

Excellent Transit88 / 100

Bike Score ®

Biker's Paradise98 / 100

Soundscore

Active70 / 100

Transit

Subway
Lechmere Station
0 min Drive
Green Line - E - Massachusetts Bay Transportation Authority Subway (The T)
Massachusetts Bay Transportation Authority Subway
Subway
Kendall Station
2 min Drive
Red Line - Massachusetts Bay Transportation Authority Subway (The T)
Massachusetts Bay Transportation Authority Subway
Subway
Science Park Station
4 min Drive
Green Line - E - Massachusetts Bay Transportation Authority Subway (The T)
Massachusetts Bay Transportation Authority Subway
Subway
Community College Station
6 min Drive
Orange Line - Massachusetts Bay Transportation Authority Subway (The T)
Massachusetts Bay Transportation Authority Subway
Commuter Rail
North Station
4 min Drive
Massachusetts Bay Transportation Authority Commuter Rail
Commuter Rail
Back Bay Station
9 min Drive
Orange Line - Massachusetts Bay Transportation Authority Commuter Rail (Purple Line)
Massachusetts Bay Transportation Authority Commuter Rail
Airport
General Edward Lawrence Logan International
10 min Drive
Logan International

Moving to East Cambridge, Cambridge, MA

Shopping Centers

Shoppers will appreciate Flats on First Apartments proximity to Cambridgeside Galleria, Twin City Plaza, and Bunker Hill Mall. Cambridgeside Galleria is 0.6 miles away, and Twin City Plaza is within a 15 minute walk.

Commuting

With a TransitScore of 88, Flats on First Apartments has excellent transit, including 10 transit stops within 4.4 miles. Transit options include Lechmere Station and Kendall Station.

Parks and Recreation

Recreational activities near Flats on First Apartments are plentiful. Discover 5 parks within 2.1 miles, including Museum of Science, Boston Public Garden, and Boston African American National Historic Site.

Airports

Living in East Cambridge provides easy access to General Edward Lawrence Logan International, located just 9 minutes from Flats on First Apartments.

Military Bases

There is Boston Support Center near Cambridge, MA.

Property Details

Flats on First embodies the best of boutique living, combining the luxuries of a modern apartment community with the comforts of a close-knit neighborhood. Come home to a place of sophistication and serenity in East Cambridge.

Flats on First Apartments is located in Cambridge, MA in the 02141 zip code.

Willow Bridge

Contact

Property Address:
21 Charles St,
Cambridge, MA 02141
Phone Number: (857) 380-0179
More Information:
View Property Website
Office Hours
  • SundayCLOSED
  • Monday10:00 AM - 6:00 PM
  • Tuesday10:00 AM - 6:00 PM
  • Wednesday10:00 AM - 6:00 PM
  • Thursday10:00 AM - 6:00 PM
  • Friday10:00 AM - 6:00 PM
  • Saturday10:00 AM - 5:00 PM

Renter Reviews

For Flats on First

4.9

2 Ratings & Reviews

How Is This Rating Determined?

4/15/23

Poor management practices

The apartments are modern and well-designed, if a bit small and short on storage space, and the appliances are way nicer than what you'd find in a normal apartment building in Boston. However, there is absolutely no insulation between floors. You will hear every step your upstairs neighbor takes, and each one will sound like a 20-lb weight being dropped on the floor. It's a shame because the building is otherwise very peaceful, and the neighborhood is really a nice place to live.

Update:...
After four months of living here, I have to take off a star due to issues with the building services and the finishings in the unit. Just too many problems for what this place charges in rent.

As far as the building goes:
1) There's not a package room as is advertised on the website, and the package lockers have been down since late September, with no indication as to when they will be fixed. The building management blames the vendor, but they also haven't found any other solution to the problem. They just scatter everyone's packages all over the floor of the mail area, unsecured, and don't send any notifications when you receive something.
2) The after-hours maintenance staff isn't responsive. There's not a number to call if you have an after-hours maintenance issue; you just have to submit a request through the resident app and hope someone sees it. I had a lock-out issue once, and, after waiting a half-hour for a maintenance person to arrive and then another 40 minutes for the person to try to unlock my door, I finally just went and stayed in a hotel for the night.

As far as the units, the main window in my apartment is without window treatment of any kind. Management said something about them either ordering or receiving the wrong kind of blinds for that window and then told me I could provide the window treatment on my own. Not OK for what this place charges.

Update #2: I can now echo one of the other reviews here. I've had packages go missing as well. Contrary to what the website says, there is no "24-hour package room". Management just lets packages be scattered all over the floors by the mailboxes, unsecured and unorganized. Not even a basic level of competence on display here.

Review from Apartments.com

1 Person Found This Helpful

Was this helpful?

Property Manager at Flats on First responded to this review

Hello There, we're disappointed to hear your experience wasn't up to par. We'd appreciate the chance to hear your concerns in-depth and suggest appropriate solutions. Please contact us at flatsonfirst@lincolnapts.com or 1 617-468-1400. We're... confident that we can turn your experience around, and look forward to getting correcting it!

9/7/22

Poor noise isolation

The facilities are all very nice and new but the noise isolation isn't up to par. I can hear upstairs stomping, showering, running taps etc. Just moved in and it's already getting on my nerves

Review from Apartments.com

6 People Found This Helpful

Was this helpful?

Property Manager at Flats on First responded to this review

Hello There,

Please be sure to contact our team to discuss this matter.

Thank you,

The Flats on First Team

Flats on First Gallery

Nearby Properties You Might Like

Within 50 Miles of Flats on First

Call