We had a lovely stay at Only Yours. Anna was very thoughtful: providing us with water bottles and giving us a lift into Mykonos Town to catch our boat to Delos (€20 each!) when she was heading in the direction.
We didn’t have a car but transport was as easy as a €1.80, 10 minute bus trip each way to Mykonos Town. Just remember to look up bus times on KTEL. The place is also along a lovely coast-path from Platis Gialos all the way to Paradise Beach - with plenty to fill a day to two along.
The views from the room were, per other reviews, exceptional!