Giovanna was one of the sweetest hosts I've stayed with to date. I had a room that differed from the photo but was large & private with two single beds. It was near the (enormous) bathroom, which was shared with another guest. This wasn't a problem and I only saw him one time, since we were on different schedules. The wifi was a spotty, especially when the bedroom door was shut, which may be an issue more to some. Breakfast was provided in the kitchen (more food than an Italian breakfast, so more continental).
Communication wasn't a problem, and speaking to Giovanna in Italian was good practice for me to learn more. Her son and his wife were also visiting and were fun to speak with everyone together at breakfast.
The location was terrific - near Palazzo Vecchio/Uffizi, the Arno, and Santa Croce.
Food recommendations: dive into the line for a sandwich at All'Antico Vinaio (worth the wait!) and visit Trattoria Del Benvenuto for an easy, typical Florentine meal. Both are nearly around the corner on the way Palazzo Vecchio.