Cristina was excellent at communicating and met us on time at her apartment. The apartment is stunning and so clean. We had an amazing stay there and would highly recommend it to others. The only thing to note is there is a tourist charge which we paid in cash on arrival to Cristina. I think it was just over 2 Euros per person per night just so there aren't any surprises when you arrive. This is the same for all of Florence I believe.