Filippo was a super host, very quick to reply to messages and prompt and flexible with check in time. He and his friend even helped carry my bag up the stairs.
The apartment itself was lovely in an ideal location about 5-10 min walk from the Duomo, cosy and well equipped. Terrace view is even better than expected with the Duomo on the right and the mountains to the left, no complaints. As it's an original property, expect lots of stairs for that beautiful view.
Regarding WiFi, whilst the flat itself doesn't have it, you can connect to Vodafone which gives you unlimited data for €4.90 per day which is pretty easy to set up, and there are plenty of café's with free WiFi around.
Would highly recommend for first time visitors to Florence!