Marco’s place is delightful. I stayed in 3 Airbnb’s during my time in Italy and Marco’s was my favorite. The decor is charming and full of character. I enjoyed the rustic rooftop views. Marco leaves a helpful notebook of suggestions for all guests that I referred to periodically. The kitchenette is tiny, but I just ate out.
The place is in the heart of Trastevere. I walked everywhere in central Rome (rather than relying on taxis or public transportation), but it was a lot of walking and probably not for everyone. The Borghese Gallery was the longest hike, but still possible.
Trastevere is also famous for nightlife. Most of the time the place was as quiet as you are likely to find in that part of town, but on weekends there is music playing from a piazza a few blocks away until around 2 am. I was ok with this because it wasn’t excessively loud. I only mention it because if you need silence, this is not the place for you.