Like other reviewers, I don't know where to start. You must stay here.
This is an absolutely incredible apartment in an even more beautiful older Roman building-- I believe Paolo said it was 300 years old! The location directly next to Trevi fountain was unbelievable.
We arrived very late, close to midnight, and Paolo was there to greet us nonetheless. We ended up staying up until 3am that night because we had the whole fountain to ourselves. Walking everywhere was very easy and excellent places for food/wine/gelato/shopping were at your doorstep.
Paolo was very responsive to messages and offered lots of tips for where to eat, where to visit, and much much more. I cannot believe the memories and pictures we were able to take away from this experience. Paolo is a very nice, kind person and has honestly restored my faith in mankind after having a bad Airbnb experience only a few days prior.
Please do yourself a favor and book your stay with Paolo now. I can't thank him enough.