Valerio is the most responsive host I have ever met using Airbnb, he replied instantly to my messages. The flat looks exactly as it does in the pictures, it is very clean and convenient in terms of its location. You can walk to the Colosseo and the 2 existing metro lines can be accessed within 5 min of walking. Valerio's father welcomed us and provided us with all the information we needed in order to spend a great time in Rome. I warmly recommend Monti's Nest.