This flat is really amazing. It's even bigger than it looks like on the photos. The two rooms (bedroom and living room) are really separated and therefore you really have privacy when staying here with 4 persons. Moreover the location of the apartment could not be better to do a city trip. The entrance to the Sistine Chapel is only about 3 min to go (depending on how full the streets are and how fast the traffic ligth turns green...) and so is a supermarket and a nice bakery plus a lot of other places like restaurants, bars, "Spätis" and so on.
Furthermore the communication was just perfect. Easy and fast, like it should be. Danilo, who welcomed us in the flat, had a lot of really useful tips for us and showed us everything we needed to know about the place.
We can just highly recommend staying at this place!