Very recommended! We arrived quite late because our flight was delayed, but the communication with the hosts was really good. They were all the time very kind, making us feel like at home. They also provided good tips on where we should go for dinner. In addition, they offered us coffee and tea, so we could start the morning or going to bed with some warm drinks.
The flat is very big, so you do not have any problem for sharing it with them. It is very clean, and Giuliana provided all the things that we needed (e.g. Iron Table). The city centre is around 30 minutes by walking, although there is a bus station quite close if needed. In addition, there are big supermarkets in the area, in case you need to buy some presents, before going back to the flat (the hosts offered us to keep our luggage and pick it up later before leaving to the airport).