The place is very nice, secure, the decoration is great, it is in a walkable distance to the main attractions, it also has a good public transport connection (one bus to Termini or one tram to Piazza Venezia). The bed is very confortable, the air conditioning has enough power to cool the place in the hot roman summer. The only problem we had is Guglielmo lives far from the appartment, so you have to contact him by phone when getting close, we didn't have a Italian mobile, so we had to find a Osteria with wifi connection to contact him, he was already sleeping (10:30 pm) so it took a couple of minutes to him to answer the phone. But after answering he came as fast as possible, it's also not so easy to find the place, because the online map tools points to a wrong location when searching the address.