We spent 3 days in Paola place. It is a real nice studio, the bed in comfortable and everything is clean. The location of the studio is perfect you can walk from the studio to every places (Coliseum, Vatican ... 25min). you are in Trastevere area, plenty of good restaurants and bars with a night market. I highly recommend Paola place is you want to visit Rome few days.
The only point is that the flat is at the ground floor which means than on the morning you can ear people going outside the building. But if you are here to visit it helps you to not sleep until 11am :-)
Paola is very welcoming and helpful and you open on the hours to get/left the flat.