First of all Sonia was very helpful, we were there due an anniversary and Sonia helped us to keep the surprise. She was also very flexible as up to the last moment we were not sure how many we would be.
That being said, the apartment is as you see it in the pictures: very stylish and wide.
I would say that the best of it is the location -- right in front of the Ponte Vecchio, prime location to be in Firenze. All important point of interest are between 2-15 min walks.
Only down-point for us was the noise. The apartment is located on a condominium with an Hotel near, and 2 of the 3 rooms have a wide window (poorly isolated) that have a direct connection to the inner court where the hotel staff goes around. This mean that from 6 am onwards it is very noisy with staff, trolleys/chariots, doors banging etc. For the ones staying in this room, this is very cumbersome. Considering the prices associated (and the house quality/location) this should be addressed by changing those windows glass to a soundproof ones.
Luckily the master bedroom, where my parents stayed, does not have any issue with the noise.