Casa San Paolino is situated 5 minutes away from the Santa Maria Novella train station and it is a perfect location for vacationing in Florence. It's a well-decorated, recently renovated, clean, and cute studio with all the basic amenities (clean towels, soap, shower gel, great hairdryer, etc.). Stefano and Paolo were very communicative from the beginning of the booking, even sharing with us their local tips for things to see and places to eat.
Stefano was waiting for us at the apartment when we arrived, making check-in a breeze. He provided us with map with suggested scenic routes and we used it our entire trip. We visited all the must-sees following his routes.
The only negative is that in the evening, there was a lot of noise from people on the street and it's audible even with the windows closed. Despite this, I highly recommend staying at Paolo and Stefano's apartment. You'll feel like a local!