Nice place. Somewhat dark, as it doesn't get any sun ever. It's a pretty humid place, probably for the same reason (your clothes will need about three days on the balcony to get dry).
Also, it's a shame that the flat is completely tiled, instead of a nice wooden floor. So it's pretty cold, at least in the winter.
Now, the good things. It's pretty comfy, there are two smart TVs, a pretty big bed. The water heats up pretty quickly. What else? Oh, it's fairly well placed, as it's right by the petralona Metro station, so you can easily get to the center for work or shopping or whatever.
Small problems that can easily be fixed: the shower cabin is leaking. The sofa is somewhat greasy. The sink in the bathroom clogs up every time. The door speaker buzzer isn't working.
Small things that can improve the stay for future guests: more carpets for the cold floors :) New fluffy towels for each new guest :)
The communication was great, the manager was very quick to respond, and friendly. Thank