The cave is a refreshing and unique experience. Everyone was extremely friendly and helpful in giving tips about Modica, and the mini museum was really interesting.
Even in August, the main room was cool, but the upstairs was quite hot (Giovanni was quick to bring us electric fans).
Due to the heat and wild fires, the electricity wasn't strong enough to heat water for the tub or turn on the waterfall, which was VERY disappointing for the children (and the reason we gave four stars instead of five). The TV did not work, I think for the same reason. I would definitely come back, if the water heater was working.