We had an amazing time at Gregory's apartment!!!
The apartment is located on the top of ornos, you can walk, but I would recommend to rent a car/atv. The view and especially the pool is the highlight of this place. The apartment itself was mostly clean, and had everything we needed. It is about 10 minutes by car away from mykonos town, but you can find anything you need on close distance. But here too, a car is needed.
All in all we had a great time in mykonos and are definitely coming back to this place.