The apartment was exactly as described, with no unpleasant surprises at all. Its location was very safe and close to everything important without being on a hectic Street. It was a mere bridge away from Santo spirito and by extension within comfortable walking distance of the Uffizi, piazza republica and the train station. The apartment itself was small but had everything you need. It also had surprisingly good windows for blocking out sound and an air conditioning system. The only small drawback was that the shower had no barrier between it and the floor other than the curtain so you needed to take a light shower to prevent it from getting water all over the floor! But this is not terribly important as this design is somewhat common in florence and again so long as you take a more gentle shower you should have no problems at all. I didn't meet antonella herself but another lady who was very prompt and efficient.
In summary this is an ideal apartment for a couple or travelling alone and provides everything you need for a very decent price.