I can only confirm (some of) the previous comments: the view is amazing, the unique location and special road to reach the house, and Dimitris is very helpful to find a car to rent at a good price.
But it should also be clear that the house is small and basically equipped. The system to have hot water is very simple (the sun!) so that you might lack hot water at night or in the morning. Especially the part of the unique room devoted to the kitchen is small and not very convenient to prepare some food as the gas-cooker is small and uneasy to reach. On top of that there is a lack of useful items (a kettle, a tea-pot, a coffee-maker for more that one person, small pans, etc.). This is a pity because enjoying the sunset on the terrace is a great experience and you could want to stay for dinner there. In that case you should prefer simple meals.
To be sure, this negative comment is not to discourage you to rent the house but to consider the appropriate price to pay: we paid to much for that in early September in comparison with the large house well situated with three bedrooms, two bathrooms, a dishwasher, a washing machine and a large garden we had the week before in Sifnos for nearly the same price.