If you are going to use a last minute agent to book this hotel then I suggest you choose another as you will be treated as second class citizens. I booked through Expedia, on arriving at hotel we was shown to a basement room, very dark and extremely small, I certainly not what you would expect from a 4* hotel. On requesting an upgrade for which we were prepared to pay for, we were told the hotel was full. Later we found out this was not true. The whole experience made sure we left our room after breakfast and did not return until we were exhausted from seeing the wonderful sights of Rome. I would not recommend this Hotel to anybody; there are far better hotels to choose from.

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!