Valeria's flat is very nice, the room is just great. It is exactly as you can see it on the pictures (maybe even better). I had wonderful three weeks in the room / flat. It was a very, very nice "homebase" for my stay in Florence.
Valeria is a very nice person and very considerate host. The whole flat with the little balcony by the kitchen is just amazing.
The neighbourhood is great. It is NOT in the city centre, but not too far away. Thus, you can still walk to the centre - and there are some nice bars round the corner (I warmly recommend the Taverna dei Artisti, in via dei Artisti, very nice people, and very nice food).
In general, the house and the whole neighbourhood is very nice, calm and quiet. However, for those who need it super-quiet, I would recommend to take ear-plugs with you, since there is a train-line nearby that you can hear during the night, and sometimes some neighbours can be a little bit noisy during the evening / nights. - But this is definitely not a big problem. - For me it was absolutely no problem, but for some people this info might be helpful.