We stayed at Matteo's appartment 3 nights and everything was perfect. Nice big appartment (really ok for 4 persons), clean, with all equipment and quality bedding. The surrounding is really good, between wealthy and popular, you can find the walls of the Vatican at two steps away -litteraly- and at 3 minutes from the metro, with nice restaurants and supermarkets at walk distance. Two bicycles were available but we did not used it this time (can be really usefull to join districts of the city unserved by the metro). Matteo was always caring about how things were doing, and was very flexible about the check-in and check-out times; he also left a personalised map of the city plus some recommendations about where to eat or go out.
Great experience, thank you Matteo !