La Residenza Fiorentina is really nice small hotel.
First: despite small one but it offers great service (value for money). Location is perfect, only 5 min walk from SMN train station. Everywhere is a walking distance, galleria de academia, galleria de Uffizi, you name it.
Second: staff are very nice, helpful, and smiling.
Third: room is very nice and clean, our room (triple bed) had 2 private bathrooms which was amazing.
Fourth: Rooms are equipped with real AC and not a chiller, so work perfectly in humid weather.
Fifth: breakfast is basic but staff is perfect and delicious. We did enjoyed it. We do like the sparkling water dispenser which is available through the clock.
The only tiny negative is the location of the reception, use of elevator and a door password, being a small hotel in a residential building.
Lastly, I will not only definitely will come back, but also I will advice all my friends to stay in this hotel once they are heading to Florence.