We loved our stay in this apartment in the heart of Rome. It is centrally located and close to all the sites you'll want to see. Although it has air conditioning the upstairs bedroom is still hot and the air doesn't travel up there. So if you're spoiled (like us) the upstairs bedroom gets too warm to sleep and so we slept on the pull out couch in the living room. I can only speak for the hot month of August in Rome.
However we would stay here again as it was a great location and the apartment has everything you'll need!