Had a great stay here and would definitely recommend! The apartment was very clean, spacious and functional. It is in a great location to many of the major sites in Rome, and we largely walked everywhere. There is an A/C unit in each bedroom, which worked very well and we relied on heavily since we visited in July! The sofa turns into a bed, but note that the living room does not have an A/C unit.
The hosts were very easy to communicate with so that we were able to coordinate a meeting time at the apartment to receive the keys. The unit is on the 5th floor but there is a small elevator, which was very helpful for luggage. There is only one set of keys, which was a little limiting at times since were were 5 people, but the building feels very secure and safe. The street the apartment is on is quiet so you have the benefit of no traffic noise, but being an easy walk to Campo dei Fiori, Piazza Navona etc.
Would definitely stay here again!