Villa Thea is a great base for your Cretan adventures... if you can cope without air conditioning.
The area is very breezy, which can cool down most of the rooms, and Manolis also provided fans. My wife and I just about managed, but my parents really struggled to sleep in the heat. Unfortunately this had a big impact on how much they enjoyed our holiday.
Apart from that, the place was great — Manolis was a kind and responsive host who plied us with delicious apricots from his tree, home-made wine and olive oil, and cooked for us one night. The house itself has a lot of character and the views are simply stunning; the photos don't come close to doing them justice.
It's also worth pointing out that neither of the main bedrooms have doors, only open staircases to the ground floor, so there is no noise isolation to/from the kitchen/living room area. Worth keeping in mind if you are a group with very different sleeping habits, since the only way to avoid being heard is to stay outside, or in the little bedroom downstairs.