Unfortunately we had quite a bad experience with this place. In summary:
1) Every night, me and my partner were beaten by some annoying insects (fleas or bed bugs), it scratches like hell;
2) The places stinks (literally has a bad smell). I don't know why, but every time you come back into the apartment you have to open a window for a while. Maybe because of the bins at the bottom of the stairs, maybe because the bathroom unit does not have a proper ventilation --- don't know.
3) The check-in rules are insane. You are allowed to check in from 17:00--20:00 for free, then you have to pay extra money (it says 18 EUR per hour!), and if you arrive after 23:00, you can't even check in at all, according to the rules. While this is mentioned in the most hidden corner of the ad, and while I didn't pay this, I think that such practice is utterly unacceptable. I have used airbnb for many years, and I have never seen this before.
4) The stairs are dirty and look dodgy (ok, it is hard to blame the owner, but still). The apartment door can be easily opened with a good kick of a foot. So you have to think twice whether you want to leave valuables there. Funnily enough, the door has three locks, but you only get the key from one of them.
5) Bed sheets do not fit the bed properly! They come loose during the night and you have to constantly refit them (if you think that this is not a big deal --- it is).
6) It can get quite noisy in the evening and during the night. If you are a light sleeper, you will struggle badly. I was hearing noticeably loud music ~4am (when I woke up for the n-th time to refit the stupid sheet).
7) You don't have a lot of natural light coming in. While the windows are big, they face the inner court of the building. You are just looking into the wall.
On the positive side, it is kind of conveniently located --- you can walk to the city centre in 15 min or so. The place was kind of clean.