We were two couples who stayed for two nights and wished very much it could have been longer. The apartment is furnished with great thought for the guests' comfort. (Note that the second bedroom is upstairs with twin beds. The kitchen is well stocked with generous supplies though minimally set up for cooking - microwave, two hotplates and no oven.)
Antonio is very available and flexible in his willingness to help. (We were able to leave our car in the garage while waiting for a late ferry departure. Be certain to check the location of your ferry ticket office!)
The location is perfect for exploring the historical centre by foot. Driving is more problematic. Our satnav directed us to the garage entrance through some very narrow streets and the driveway down to the carspace is quite narrow, even for a compact car.
Nevertheless, this is an excellent location for exploring this interesting city, and Antonio will give you lots of helpful advice to find what you need.