My wife and I spent six nights at Antonioni's apartment in the end of May. The location is perfect, smack in the centre of everything, right next to the Cathedral, and in a smart area. There were plenty of shops, and bars / restaurants very near, and the main fascinating market was 8 minutes walk away. The check in and out procedures were very straight forward. The apartment was smart, spacious and had everything we needed. It had good WiFi, a large TV with Netflix etc, and good air conditioning, a large comfortable bed and good bathroom. The living area had plenty of comfortable sitting, and the kitchen was quite adequate. Although it was on one of the main streets it was very quiet. There was no outside view, but because of the two atriums it was very bright and cheerful.
The communication with Antonio was good and easy through messaging - we had no need to contact him for anything beyond check in and out rules.