We found this to be just what we needed for our group of 10. Hosts are very good at replying and had a smooth move in and out.
Do be aware there are Lots of very narrow stairs up to the apartment with very low ceilings. If you have lots of luggage this may not be the best place for you.
We stayed in early spring and had all the windows open. (No A/C) windows open to a courtyard shared by many other occupants and can be rather loud at all hours. Also the clock tower rings at the hour, the half hour and the quarter hour. (If you are a light sleeper not the best choice) of course ear plugs are recommended!
It is a very good location. And has lots of options for a large group. Plenty of towels etc.