Sofia's place is located at the perfect location. Seriously - smack dab in Palermo Soho, right in between my 2 favorite coffee shops. It's a stylish place that suits the needs of a business traveler. Enough space, clean, fast wifi, and Sofia was extremely responsive via messages for any questions I had (literally within a minute each time).
I would book it again. However, I'd bring earplugs (it's rather noisy and the walls/windows are thin) and I would not count on the couch to be a bed. It's fine as an emergency bed for one night, but not suited as a sleeping arrangement for a week.