Great stay, would definitely come back! BUT a few things to be aware of. Oia Sunset Villas is gorgeous -- the grounds and pool area are great, very comfy, great chairs, great view, especially of sunset, and we couldnt have asked for more there. The staff was incredible, especially Dimitris -- made reservations for us, gave us a phone to use to communicate with them, set up cars, airport transfers, etc. They set up massages for us right on the premises, which were incredible. The house itself was cozy -- we were a big crew, so we were expecting it to be a bit tight, but would be good for 6-8. The deck/ hot tub were great, the hammock was perfect, and our unit specifically was perfect to watch sunset.
A few things to be aware of ahead of time though...
1) the house is mostly garden level, which was perfectly fine, clean, etc, but it just looked much brighter in the pictures.
2) There is no food available on site, which again, was fine, but just be aware of it. The unit has a decent sized kitchen so you can get food/groceries in town, and you can also ask the staff to order delivery for you (which we did and was great). There is wine/beer/water and such available at the bar, but meals/snacks you have to go to town.
3) The location is very convenient to areas of Oia, or the staff also got us cars to go elsewhere, but it is a pretty steep hill to get to town -- not uncommon in Santorini, but can be dark at night (we mostly took cars, but also had one less-mobile person). On the flip side though, since it was a bit outside of town, the cars could come right to the front door, so we didnt have to wheel our suitcases up /down steps or anything like that!
Overall, we had a great time and stay in Santorini and at the Villas!