It was nice to stay at this flat. The issue was that the shutters in the bedroom looking to the street didn't work and on top of that the window looking to the inner courtyard didn't have any shutters at all so it was very light at night and I couldn't sleep well, I was walking up every time the neighbors were switching on the light in their flats.
Otherwise the flat is very clean and well organized, there is a dishwasher (but no detergent) and a washing machine (no detergent either), so we bought a box and left the remaining stuff for the next guests. Maria wasn't answering any text once we checked in. They charge you a deposit and YOU pay 1% of it to the bank (the fees) which I find ridiculous. If you are ready to accept this - rent this flat, the neighborhood is very nice, lots of restaurants to go out, not touristy at all, and not too far from the city center.