The flat is exactly as shown in the pictures, we were 3 persons and we basically had one entire room for each of us. All basic facilities available including small but well equipped kitchen and proper wifi.
Communication with either Mauro or Daisy has been fast and effective for all the time of our staying. We had only one small issue with the shower and they solved it without us even noticing. No trouble in checking in and checking out.
It is also worth menitioning the neighborhood, Karlin, is perfect if you plan on renting on medium-long term. It is a very quiet residential area, but with a few hidden gems. You have 2 subway stops within 10 minutes walking and a tram stop even closer, so day and night you have any spot in town within easy reach.
All in all a very positive experience, I would definitely stay there again.