Marisa and Remo are great people, my flight was delayed and they were waiting for me at the entrance of the building when I arrived. They explained how everything worked and gave me a map with lots of tips about places to visit and how to get around the city.
Talking about the room, it was a great experience and I highly recommend it! It's comfy and clean, with some facilities that I wasn't really expecting, such as a frigo and a kettle (with some tea and coffee). Moreover, it's super well located, you can visit all the main attractions on foot (even the Vatican is 45 minutes away on foot). The area has lot of nice places to eat and is safe. I was travelling alone and felt comfortable walking around even during the night. It's a pretty busy touristic spot. In addition, the place is as described, totally independent, which means that you don't disturb or get disturbed by people going in and out.
If you are looking for a simple, comfy and well-located place to stay in Rome, this is your place :)