We had a great time in Rome at Riccardo's place. First of all, we had to arrive late in the evening (airport flights) but he was oh'so welcoming. A very good host - He was kind enough to get through everything we absolutly had to see during our short stay via a map of the city (monuments, restaurants, bars, etc).
Second of all, the appartment is just beautiful and easy to find. The location is great, close to everything. We almost did everything by foot (but were still very glad to have the tram to get us back at the end of the day)!
I recommend completely.