Massimiliano's place is a fantastic little apartment in the heart of Trastevere (a very hip, lively neighborhood in Rome). It's a little off the beaten path, but still very vibrant and within walking distance to many excellent restaurants and cafes. It's steps away from a beautiful church with a famous Bernini sculpture and within reasonable walking distance to all the great sights of Rome (~20-30 minute walk to anywhere in the historic center). It also has a wonderful rooftop terrace that really was the cherry on top for our vacation. We loved sitting up there drinking coffee and enjoying the scene down below. We also loved that there is a kitchen to cook breakfast/lunch/dinner when we didn't feel like going out. It is well stocked and there are two moka pots to make espresso. There is also a grocery store ~500 meters away that we frequented to buy milk and eggs and coffee and such.
A couple things to note would be that 1. There are quite a few stairs to get up to the apartment and they're a little uneven. We actually really liked this because it forced us to walk off all the pasta and pizza we were eating. But if you have mobility issues, this is probably not a great place for you because there is no elevator. 2. The street noise can be quite loud and the locals like to stay out until 1-2AM some days. I have a feeling that you will experience this anywhere you stay in Trastevere though and we were able to overcome it by playing white noise with the volume cranked on our phones. 3. This is not a self check in so make sure to coordinate with Massimiliano ahead of time based on when you arrive so that he can meet you to give you the keys.
Even with all the caveats, we absolutely loved our stay here and it made our vacation in Rome that much more special!