Bottom line up front: Absolutely amazing experience. Wouldn't recommend anywhere else.
-Hospitality: All of their staff were super friendly and helpful throughout our stay, but perhaps the best example I can give is this. We checked out of our room at noon on the day of our departure flight, but the flight wasn't until midnight. We spent some time in the nearby towns and shops, but there was only so much we could do and had spent all of our money since we were leaving. When we went back to re-confirm our airport shuttle, they also saw we were wiped out and without hesitation gave us water, watched our luggage, and allowed us to sit in the shade for hours for our shuttle even though we'd already checked out.
-View, location, etc: Fantastic view of both the caldera and evening sunsets. At the edge of Imerovigli, so it is nice and secluded, yet not out of the reach by any means. We stayed at the superior studio room and loved it, but all of their rooms had great views and balconies.
-Catch/Cons: The following two "cons" are simply my own estimations as to why this impeccable gem was within a price I could afford.
1. You must throw away toilet paper instead of flushing it (old sewage system). This issue is true all over Santorini, but the high-end hotels pump their sewage periodically so that their patrons don't have to make this small adjustment.
2. The shower was small, but unless you're 7' tall or weigh 300 lbs you'll be fine. Plus, there's the pool they chlorinate daily.