Marina was really a great host: very kind, splendid smile and very organized for providing you with the best addresses of the city, most close by her flat. Basically, the location is ideal: very (very) central. Everything is by walking distance. Sometimes at night the street below can be a bit noisy but that's what you get from being that central. The flat in itself is very well maintained (even though the shower is a bit tricky to understand at first) and can easily accommodate 4 people. Great dinner restaurant right downstairs and ideal petit café not even a 100 m away.
If I had to come by again to Firenze, I'll just stay here again.