Adriano's place is suitable for a couple or group of friends. The flat is in an old and stylish building. The decoration and facilities inside the flat are simple yet very useful. The communication was also quite fast and we didn't have any troubles whatsoever.
Only minor things that can be improved are the heating and hot water supply (for winter conditions) and the sound isolation for street noise. We didn't mind very much; but a light sleeper can be affected without an earplug.