We have visited a lot of Cyclades' islands and can say from experience that you won't get much better value for money than Milolithos. The location is great, you're close to all the best towns and beaches and restaurants you'd want to visit.
The house and amenities are also perfect. We stayed at one of the two cabins on Michael's domain. Michael and family live next door. The domain and surroundings are truly peaceful and quiet, so you're away from possible nightly tourist noises. But still close enough to the beach, town of Adamas and tavernas that you can walk or take a short drive.
In the mornings you can meditate in the wheat field across the dirt road, or take a walk to the beach and find a quiet spot with your feet in the surf.
Michael and his wife Popi were extremely kind to us and our son and brought us all kinds of goodies from their own vegetable garden. Our son loved them so much that he joined Michael and Popi every chance he got. We really became part of the family during our stay (and still feel as if we are).
We felt sad to leave these wonderfully kind people when our stay ended and would recommend meeting them to everyone!