We really enjoyed our stay at Giacomo’s apartment in Florence. The location is fantastic, an easy walk to all attractions and supermarkets and restaurants within minutes. They have done a great job of lighting the rooms so you don’t realise you are underground with very minimal natural light.
One of the problems we had was that the apartment would get a little stuffy as there are no windows to open for fresh air. Also, it rain a couple time whilst we were there (only passing showers) which lead to quite a substantial amount of water leaking into the kitchen from the street. This happened twice during the week we were there. Another smaller issues was that my partner, who quite tall, had some issues with low doorways. Despite these we really enjoyed our stay!