We really enjoyed our stay here. It is a nice apartment and very centrally located in Rome. There are two double beds, one up some steep stairs in a low ceiling loft. But it is well decorated and interesting.
Dario is a great host. He is able to coordinate rides to and from the airport, as well as skip the line tickets to certain sites. We took advantage of the skip the line to the Vatican, and we were very glad we did.
Dario does collect some city taxes (or something) in cash once you arrive.