Maria was so very helpful before and during our trip. She arranged for pickup and drop-off at the airport as well as help with luggage from her very pleasant porter, Vasilli (you will need that to get to her location - many steps and hard to find on your own). She also connected us with a concierge via email (Maria S) who scheduled a catamaran outing for us and provided information about car rental. Maria S met us after we arrived and spent time sharing some tips for things to do and places to eat as well as escorting us to our bus for the outing.
While there, the larger apartment AC seemed to not be cooling well (compared to the smaller unit) and Maria responded quickly to our email and sent a repair man to check it out. We were there in July and it was very hot and the unit was doing all it could to cool the apt but it stayed a bit warmer than we like for our entire stay. We are from Texas and are pretty use to a cool house, so some of it was probably personal preference. Two floor standing fans were a big help.
The apartments had a lovely view and were not far from the main shopping area in Oia. It is quite a few steps uphill so you need to be in decent shape to navigate them. They were clean and the daily housekeeping service was very nice. I would recommend anyone stay in these apartments if you find yourself in Oia.