I stayed at "La casa della torre" for ten days in mid-September and had a wonderful time. The place is sparkling clean, very spacious, comfortable, airy, and luminous. The enormous emblematic tree not only makes the house special, but also provides enough shade for the air conditioning to become redundant, which is definitely a priceless feature in Sicily. I only used it in the bedroom, which does receive direct sun in the afternoon. Another precious thing about the place is the roof terrace overlooking Punta Secca. It's completely private and perfect for morning coffee or for chilling out in the evening.
The location is great, the bus from Ragusa stops a few steps away, the nearest beach - which also happens to be the most beautiful one in the area - is 200 m away, everything is reachable by a five-minute walk (restaurants, bars, grocery store, pharmacy, and last but not least, Montalbano's house). This comfortable location has only one minor disadvantage: the main street leading to the roundabout in front of the house gets busy and therefore rather noisy in the morning or in late afternoon. But since one probably won't stay inside throughout the day and with windows wide open, it's not an issue.
As for the hosts, Antonella and Felice, I cannot praise highly enough their responsiveness, hospitality, and kindness. I was travelling alone and didn't have a car, so Antonella offered to take me to a larger supermarket in the nearest town. (The one at Punta Secca is well stocked, but rather pricey.) They even took me to an excursion to Modica and Scicli, guiding me through these baroque towns and explaing its history and traditions; I spent a lovely evening in their company.
In conclusion: I can only recommend the place and will definitely return the next time I visit Sicily.