Peter and Olga's penthouse has pretty much everything you are looking for:
1. the location can not be beat. truly in the heart of mykonos town
2. the size of the house is great. 2 floors with many common areas.
3. rooftop!!!
4. the hosts bring fresh fruit for you at check in
5. Olga sets up any transportation you need. they will even foodshop for you before check in if you need
definitely will return