I'd like to start with the good things about the apartment.
The location of the apartment is very good. You're in the city center so you are close to everything that you'd want. from shops to metro/bus stations to restaurants. The checkin/checkout process was smooth. Being an old building the walls are quite thin but I cannot complain about any noises.
Now there are some issues/things that should be changed.
The photos look 2+ years old. You always expect a margin of difference between the photos and the real apartment but I felt that here that difference is a bit bigger. the apartment was clean enough with clean sheets and towels but there were a few long hairs on the bathroom and kitchen towels. Regarding the kitchen, you have almost any appliance that you might need but it misses out on basic things. The house rules are to wash and clean any dishes that you use but there's no sponge, dish soap or paper towels to clean them so you'd have to buy them yourself if you plan on using even a glass to drink water. Also, there is some tube connecting the water heater to the kitchen sink which isn't seen in the photos.
In the living room there is an outlet without the plastic protection so I wouldn't suggest to use that.
The whole apartment would need to be repainted because there are portions of the walls that are grey/brown-ish from people touching them all the time (especially at the headrest part of the bed).
The biggest issue is with the bathroom: the sink and toilet were clean and disinfected but on my last day I noticed a few ants roaming around the base of the toilet, the paint on the ceiling was chipping off in big pieces and it also had water stains in some areas(if that is mold then its also a health concern).
Overall I chose the apartment for its pictures and overall good ratings but I was a bit let down after staying in it for a few days.
If I'd had to choose again I'd look for another one until at least the bathroom issues are fixed