Claudio is extremely friendly, and his place is beautifully decorated! He arranged our transfers to and from the port, had excellent advice about getting around the island, and made an absolutely delicious (and way too big) breakfast for us every day. The layout of the house is very nice--the guest room is entirely separate with a private entrance, but you can still knock on Claudio's door for help if you need it. The dogs are also adorable and very friendly.
My only caveat is that the house really is a bit far from town -- there is an ATV rental place nearby, and you should get an ATV if you want to go around Akrotiri and don't have a car. (Otherwise, you are in for some long, hot walks.) That said, it is well-located for traveling to other cities in Santorini, as the bus stop is very close.