Tl;dr: highly recommend, great host, wonderful apartment & location
First and foremost, let me say that Tomaso was an excellent host. He was in contact from a day before I arrived to make sure everything was in order for my arrival, and he gave me a helpful list of good restaurants/trattorie/osterie/bar, sightseeing recommendations, local information for Trastevere, and clear instructions about apartment rules. He was quick to reply to any message I sent and was happy to provide any information I needed.
The apartment is a very warm space with anything one might need while staying in Rome. It’s clean, well kept, and ready for its inhabitants (and it’s cleaned immediately before/after you arrive - I met the cleaner myself during checkout).
The location is a dream - a stone’s throw away from anything you want to see in Rome, and Trastevere itself is a gem. There are also at least half a dozen great small restaurants both on the street and within a three minute walk.