This location in Rome is perfectly situated in the middle of all the sites you will likely want to visit. It is walking distance to the Vatican and near many restaurants and markets.
It is a huge apartment with many bathroom/toilet/shower options. It was perfect for our group of six. Situated overlooking the Tiber, it was beautiful, and there was a nightly music festival on the banks every night that the teens visited--it was nice to know they were close.
Pierluigi was wonderful--we took him up on his offer to get us a driver from the airport to the apartment--and it was the best decision ever. He also got us a taxi on our departure to the train station--he was an excellent host. I highly recommend this apartment especially if you are a large group.