We stayed in the yellow room and really enjoyed ourselves. The location is excellent - right behind the colosseum and the range of available public transport is great: bus, taxis, metro (within 5-10 mins).
The neighborhood had a lot of great restaurants and we ate locally a few times. The hosts provide tons of information before arrival - we could plan our trip well before arriving. Andrea is also really accessible. Whenever I had a question, he was always very quick to respond and we really appreciated this.
Even though there isn't a coffee machine in the room, there is a shared one in the kitchen and it provides good quality coffee (capsules).
At times, we could hear our neighbors through the wall but it wasn't a big deal for us. We slept really well and the beds were super comfortable!