My girlfriend and I had a wonderful stay here for a week. The hotel is smaller than you think, only around 30/40 rooms, which makes it a really cost environment. Rooms were great, nice and clean, food at the hotel was good with a couple of local food places to try (would highly recommend Mario's). Staff are wonderful and made our stay fantastic.
The only thing I would warn is more about Santorini in general - getting around by bus is difficult given the location as they are very infrequent so either rent a car or you'll have to get taxis when going out and about. Taxis are very expensive, minimum spend on Uber was 36 euros, you can get some metered cabs for shorter journeys for a bit less but a 5 minute can from the hotel to the airport was still 20 euros.
All in all we had an amazing experience here, would highly recommend it!