We didn't actually meet Federico, but we did meet Constanza, his very warm and informative colleague. She was there on our arrival, and generously provided us with a wealth of local info beyond a guide book take on Firenze arts, culture, eating out and field trips to the amazing Mercado Central.This third-floor walk-up penthouse in a historic building with large terrace is spectacularly located and spacious with a small kitchen and a comfortable eating/work area. A back patio includes a convenient washing machine, and for the first time in years, I hung out laundry to dry in the breeze. Lovely. (My wife thinks I was crazy to wash clothes on vacation, but, hey, I was running low.) Our only quibble: The queen mattress could be higher quality.
A note about vehicles: We rented a small Fiat for a road trip through Tuscany and Marché, and were glad we waited to pick it up and then dropped it off immediately upon our return to Florence. Taking a vehicle into the historic district is not worth it, and impossible in some areas.