Lovely place!
It was perfect for me and my adult son for our three weeks together, and then when I had my two weeks alone it didn't make me feel like an empty nester.
I had one person planning on joining me after my son left, and then it turned into two, and then three, so I told them I wanted my own space and I finished my holiday alone. It was the right choice!
The apartment and neighborhood have a couple of quirks that might not be for everyone. Very low ceiling beam in the upstairs loft. I practiced self awareness and mindfulness and was fine, but my boy bonked his head a couple times while taking laundry up.
Trastevere is noisy. I'm am early riser and went to bed each night just as the party was starting. I turned on 8 hours of frogs and crickets and slept fine.
If you don't mind the above two things and you don't try to bring too many guests, you'll probably have a lovely time, too.
I will definitely rent from Luigi again!