Openigloo home
Openigloo home

Follow us

For renters

Apartments for rent in NYCRenting tips and resourcesVerified apartment listings in NYCBuildings and owners in NYCBuildings in BostonNYC market analysis reports

For landlords

iglooIQListings quality policy

Trending neighborhoods

Apartments in AstoriaApartments in Bedford-StuyvesantApartments in BushwickApartments in ChelseaApartments in Financial DistrictApartments in SohoApartments in Upper East SideApartments in Upper West SideApartments in West VillageApartments in Williamsburg

NYC boroughs

Apartments in BronxApartments in BrooklynApartments in ManhattanApartments in QueensApartments in Staten Island

2-bedroom apartments

2-bedroom apartments in Bronx2-bedroom apartments in Brooklyn2-bedroom apartments in Manhattan2-bedroom apartments in Queens2-bedroom apartments in Staten Island

Support

FAQContact usLive support

Legal

Terms of usePrivacy policyCommunity guidelinesAgency disclosureFair housing disclosureStandard operating procedures
© 2026 Openigloo Inc. All rights reserved.
M

Mark Berkowitz

Head Officer·1 building·6 units
2.9

6 reviews

Highlights

No
Evictions
8
Litigation cases

Renter recommendations

-%

Renters recommend associated buildings

-%

Renters approve of this owner or associate

Review summary

Summarized from anonymous rental reviews on Openigloo.

Recent reviews for buildings managed by Mark Berkowitz point to significant challenges with maintenance, particularly pervasive mold and water damage issues that are not adequately addressed by management. Tenants frequently report slow owner responsiveness and poor upkeep, including unresolved leaks and pest problems. Garbage management receives mixed ratings, and heating systems are often reported as subpar in cold months. Despite some positive notes on location and features like roof access and laundry, many renters express dissatisfaction with building management’s delay in repairs and overall handling of tenant concerns. Prospective tenants should be cautious and persistent if considering these properties.

Reviews

Former tenant·26 minutes ago

Not the best, not the worst

Pros

Laundry in building, roof access, close to multiple grocery stores, walkable to G and JMZ trains.

Cons

Mold issues, cold during the winter, slow responsiveness from Management.

Former tenant·Over 1 year ago

So much MOLD

Pros

nice location, roof access, dish washer, laundry

Cons

Mold, Leaks, Water Damage, Unresponsive Management, Small rooms, only one washer dryer for the whole building Our apartment has had several leaks, one in the bedroom, one in the kitchen and one in the bathroom. The bedroom one being the worst with water dumping into the room during a bad rain storm leaving an inch of standing water. It took several months of complaints for the roof to finally be fixed and while it has been better since, when you go on the roof after a rain storm you can feel pockets of water underneath, Seems its only a matter of time until the leaks start again. There was considerable damage after the leaks, mainly extremely warped floor boards and soooo much mold. The back of my dresser was covered in mold, shoes covered in mold, the suitcase under my bed covered in mold, the whole place just constantly smells like mold. I’ve never seen mold grow on my belongings like this in any other nyc apartment and all of us getting dehumidifiers for our rooms have barely helped. Also think the Central AC units may be part of the culprit as I’m pretty sure the filters and units have never been cleaned properly. The management is also extremely slow at responding and fixing things. The most concerning being when the front door of the building was broken, leading to an intruder in one of the apartments and it still took several days to even get a response and get the door fixed. I seriously worry about the structure of this building. One of the leaks in the bathroom lead to growth of black mold on the ceiling, they said its an issue with the whole structure of the building and the apartment would need to be vacant for it to be fixed. Nine months after our initial request to have repaired they merely plastered over the mold so it looks okay and they can rent it out immediately instead of actually fixing the issue. These are just the issues with my apartment but several others in the building during our time here have their own horror stories with damages and unresponsive management. If you move here beware, get a dehumidifier and be on top of emailing constantly to get things fixed!!!

Advice to the owners

get the place tested for mold

Buildings associated with MARK BERKOWITZ

  • 257 Hart Street

    257 Hart Street

    2.9(6)

    Stuyvesant Heights

257 Hart Street

257 Hart Street

2.9(6)

Stuyvesant Heights

Building ratings

Cleanliness

-

Trash management

-

Pest control

-

Water pressure

-

Heat

-

Neighbors

-

Noise levels

-

Owner responsiveness

-

Cleanliness

-

Trash management

-

Pest control

-

Water pressure

-

Heat

-

Neighbors

-

Noise levels

-

Owner responsiveness

-

Rents and deposits

-

Renters received their security deposits back

-

Electronic rent payments

Open violations

From past 10 years · Updated 5 days ago

Average violations per unit for this owner or associate is worse than the city average.

Owner average5.66Violations per unit
NYC average0.81Violations per unit
5Class C
Immediately hazardous

Rodents, pest, mold, inadequate heat or hot water, defective building parts

4Class B
Hazardous

Smoke detector issues, inadequate lighting, no lighting for stairways

25Class A
Non-hazardous

No peephole on a door, no street number on the building, unlawful keeping of animals

0Class I
Missing info

Missing or non-compliant with administrative information orders or filings

M

Mark Berkowitz

Head Officer·1 building·6 units
2.9

6 reviews

Follow us

For renters

Apartments for rent in NYCRenting tips and resourcesVerified apartment listings in NYCBuildings and owners in NYCBuildings in BostonNYC market analysis reports

For landlords

iglooIQListings quality policy

Trending neighborhoods

Apartments in AstoriaApartments in Bedford-StuyvesantApartments in BushwickApartments in ChelseaApartments in Financial DistrictApartments in SohoApartments in Upper East SideApartments in Upper West SideApartments in West VillageApartments in Williamsburg

NYC boroughs

Apartments in BronxApartments in BrooklynApartments in ManhattanApartments in QueensApartments in Staten Island

2-bedroom apartments

2-bedroom apartments in Bronx2-bedroom apartments in Brooklyn2-bedroom apartments in Manhattan2-bedroom apartments in Queens2-bedroom apartments in Staten Island

Support

FAQContact usLive support

Legal

Terms of usePrivacy policyCommunity guidelinesAgency disclosureFair housing disclosureStandard operating procedures
© 2026 Openigloo Inc. All rights reserved.