Hotel Asteri was the perfect location for our trip. It's a very short walk to the primary beach/restaurant area in Ornos, and it's directly across the street from a fully-stocked market. It's also a beautiful stroll to Mykonos town, though a little longer (40 minutes). If you're not up for that walk, it's a quick and easy bus or taxi ride into town.
Mina was a wonderful host. She gladly stepped in and helped us when we needed it, and was warm and generous with her time. We would happily return to Hotel Asteri when we come back to Mykonos.