The accommodation was really nice. It was very close to the Ottaviano metro, bus station, Vatican museum and Fort Michelangelo. It isn't a strict center, so it's not so crowded and loud. It's an ideal place for people who appreciate calm more than crowded places. It was very nice to spent there a lot of time resting after long walks around Rome. Everything was fine and accurate. There was a fully equipped kitchen, large shower, towels, safe, iron, tv. Barbara and Fabio offers stationery wifi but also one that you can take with you to the city. Although we didn't meet host personaly I can say that they are fantastic hosts. They gave us very detailed information how to get there. They answer very quickly and there's no problems.
Tips: In front of the apartment is a restaurant and a cafe where you can drink a coffee and eat delicious Italian sweets and cookies. Very close to the house on Via della Gulliana (probably 12) is a pharmacy and local shop with fresh bread, cheese, olives, artichokes and italian hams. You can buy good food for breakfast.
If you visit Rome in April and May, and you are allergic, you have to take medicines with you. We were constantly sneezing and everyone is sneezing around too! And it's even quite funny :)
Plan your meal time. Sometimes it is impossible to eat something between the hours of 4PM and 7PM, because everything is closed. If you are gourmands/greety eater, just like us, you have to try the crispy Sfogliatelle and Cannolo. And if you like meat - try Porchetta!
When it comes to sightseeing, it is necessary to go to Governo Vecchio street. Besides the most important places to visit, if you are an art lover I recommend a private collection of works in the Galleria Doria Pamphilj palace.