The location is fantastic and very atmospheric. You get to live the way Florentines live with front door opening right into a medieval cobbled street. The place is merely 50m away from the grandiose Basilica di Santa Croce which serves as the final resting place to many prominent Italians including Galileo and Michaelangelo (worth a visit, btw!). The apartment is in a quieter street away from the mad crowds, but is still merely a 10-20m walk from everything you want to see in Florence.
The place itself is ok, it was behind on some little maintenance when we visited. We stayed with 4 kids aged 7-12 and they went bananas over the cozy 2nd level sleeping space. Although, beware, the 2-bed upper level nook won't accommodate a standing adult and might be challenging to get into for elders.
Communication wad very prompt, we were able to connect with the person who greeted us over Whatsapp and coordinate our checkin which was a bit late.
We stayed in summer during a bad heatwave and the 2 A/C units were really struggling hard to keep the place cool. They are small units and rather noisy.