We had a great stay in Florence staying in Irene's apartment. The first thing to comment is that the location is simply perfect! Only a few steps from the Duomo and Campanile and with fantastic views of Florence from the windows.
There is a small supermarket (Spar) just around the corner, but a much better one (Conad) just a 5 minute walk away.
Lots of local restaurants and bars nearby too.
A great place to stay and use as a base for visiting a great city.