We rented Vespas which is by far the best way to see Rome. As a result we didn't need to be within walking distance of the central sights. We loved the hotel. Clean, bright, brand new and with a huge balcony terrace overlooking a very green treed neighbourhood. The beautiful breakfast room was in a "backyard" filled with huge pine trees.
The room was very well decorated with a flat screen TV and a modern bathroom
The staff were all wonderful, friendly and helpful (particularly Simon who was very good to us)
If you want a classy, clean, new hotel in a quiet verdant part of Rome this is perfect. There is a bus that is also easy to take to the sights
We'd go back in a flash.

We booked a room in the Hotel Prime Hotel Principe Torlonia in Rome (through Last minute.com), at a cost of 224 euros a night. On arriving, the hotel informed us of an “overbooking” & put us in another hotel which was considerably inferior. We could do nothing. The hotel denied any responsibility, as did Last Minute.com. This is doing business by cheating, tricking and lying. Don’t let it happen to you.

This Hotel could be so good but is let down by its staff, when we arrived we were told there was no room as our credit card had been rejected but Hotel did not tell any one. When the card was used to pay it worked. We were offered a hotel in the Vatican area no good for us as we choose the hotel as it was near where our dayghter lived and she visited the hotel twice before we arrived to make sure they had the reservation. As we refused to leave staying at reception desk so no one else could be checked in, the Hotel suddenly found us a room by giving us a room for someone who had not yet arrived!!! We also got a small standard room not a deluxe as booked and not refund on the rate. We also experienced the non operational air conditioning and could not get it switched on and the breakfast is nice but not very extensive. The staff were not very friendly and the attitude they took when we arrived was disgusting they just didn't care that we had no where to stay. This could be a very nice hotel but our experience was very bad at check in!

This hotel claims to be in the center of Rome, and that was not the case.

When we arrived, the room was hot and uncomfortable and they would not turn up the AC and there was not way for us to do so ourselves. We had to open the doors to the balcony which we had to force because they were stuck rubbing on the floor from being too long.

They could not activate two card keys to our room so that we could both have our own keys. They would fix one and the other would stop working.

Breakfast was nothing more than mediocre. And they had the nerve to charge for a coffee refill.

There was no privacy and it appeared that our coming and going was "monitored" and we felt like we were staying at our grandmother's place.

I would avoid this hotel. We actually wanted to leave and they held us to our room rate for the entire stay. Very unprofessional.