Katarina's place is lovely. I stayed here for 3 weeks and enjoyed my time. It looks just as her display pictures. It's a cozy and clean little apartment with a private entrance. The kitchen has updated appliances. The bedroom is cute and has a TV.
As others have mentioned, don't let the staircase or warehouse across the street deter you. The street outside can be a bit noisy, but just normal city sounds and the place is overall very quiet. The building across the street does have some bright lights at night, but there are curtains in the bedroom that do a good job of blocking the light out if it is bothersome (I personally liked it).
The neighboorhood is a mix of residential and some warehouse-like buildings for construction materials. I always felt safe in the area and in the apartment as well. There is a local grocery store within 4 mins walking and a stop and stop 7 mins driving. Laundromat also 7 mins driving (no washer/dryer in unit). The L train is 10 mins walking.
Katarina is very sweet and accommodating. She responded to my questions quickly. I would definitely stay here again.