I have had a lovely stay in the apartment. The location of the apartment is great as a lot is within walking distance. Although the room is small, it contains everything you need. The airconditioning works perfect and is very pleasant during the hot summer in Rome.
To really escape the Roman heat I'd recommend to go to the beach for a day. The beach in Ostia can be reached by public transport within an hour and there are also a lot of other less crowded beaches easily accessible by public transport.