Damien and Sergio's place is a great spot for anyone looking to relax in a more remote spot on Mykonos. Their place is a condo on a property with several other condos (maybe 30 or 40 or so?). The property has a pool and a private beach as well as a small restaurant with solid food at reasonable prices.
Renting a car is kind of a must though, as the property is not near any grocery stores or coffee shops... unless you want to walk a half mile on tight/treacherous/hilly roads. A ride to and from Mykonos Town one evening cost us 50 euro (with George, the private driver recommended by Sergio who is cheaper than a taxi). The next day, Sergio quickly helped us get a rental car. Within 30 minutes the rental car (new, in great condition) was at the property and cost only 35 euros a day and the rental company allowed us to drop it at the port when we left. I highly recommend renting a car through Sergio vs online.
Sergio gave us a helpful tour on our arrival. He was super responsive and gave us all sorts of great recommendations on places to eat and things to do throughout our stay. Their place is stylish and clean, and had everything you would need (except pool/beach towels -- be sure you bring your own).