"Peter's Dream" was a great find for us. We were a family of five, so a place with 3 bedrooms and baths, with a kitchen, washing machine and (importantly during a heat wave) air conditioning was awesome. A few details that we found important.
1. Pietro was a great host, always responsive to any questions or issues.
2. The location is a ten minute walk to the Colosseum metro -I highly recommend getting a metro card and using the metro to get around - the system is safe, clean and trains come often. You can also use the card on the bus system, although we didn't use it.
3. Rome is a very walkable city, if you don't mind a 30 or 40 minute walk on cobblestones. We walked to Trasvestere for example, something worth doing - tons of great restaurants there.
4. The area around Peter's Dream has many great restaurants, and also 3 blocks away there is a Carrefour Express store, which is very well stocked for the basic needs you might have. Also, there is a very nice wine shop around the corner from Peter's Dream.
5. It took us a couple of days to realize that we could put our trash into the large receptacle at the end of the block.