No better place to stay than Oia, it is a truly beautiful place. Communication with Maria was very good, and she was very helpful with transfers and suggestions for things to do.
The view from the apartment is something else, feels like a bit of paradise.
There was construction going on next door which started quite early but shouldn't bother those who plan on spending most of the day out and about.
A general note on Santorini, rent a car if you can, this island is so small but really diverse; it's really worth seeing and can be done in a day or two!