We enjoyed our 3 nights stay at Ada's apartment, it is cosy and perfect for couples! Location is excellent, minutes away from Duomo & many attractions that we could stop by the apartment to take a break or put down our shopping, it is also minutes away from the best gelato shop (Grom) in Florence! The apartment is walkable from the train station (10 mins), with good hot showers and room heating. We had a comfortable stay and will recommend! However, just a note that the mattress is a bit too hard while pillows are rather soft, so it took some time to fall asleep. We could also hear neighbours walking on the stairs outside our door late at night on one of the nights, but it is fine on other nights.
But overall, we highly recommend the place because of the location and otherwise comfortable stay! The bottle of Chianti red wine from Ada is a lovely touch, she is very responsive to our questions and is a very good host! :)