First of all Gloria is a great host: kind, helpful and responsive. You got the feeling that she is doing her best to cater for your needs. Secondly, the apartment is big and well equipped. Well, the bathroom is very long and narrow but it wasn't an issue for me. TV and WiFi worked perfectly. For my standards it was a bit cold (19'C) inside even with the heating on.
The thing I disliked was the neighborhood. I was in Florence many times and stayed in various districts but first time I didn't feel the magic. It's just a regular residential district with busy streets, big houses and cars parked along the curbs. To get to the center you've got to take a bus.
If you enjoy a morning jog you might take advantage of the fact that Parco delle Cascine is nearby.
Generally, it's a descent offer but I myself won't be back because of the location.
Cheers!