If you are looking for the best place in Ios to stay and be hosted by the nicest guy you will ever met, go there for sure ! The apartment is just between Chora and Mylopotas beach, on the top of the cliff with an amazing view and everything is reachable in 10 minutes (by walking).
But the most important is the host, and Giannis is an incredible guy, that will be there for you during your trip. He will give you some tips to avoid crowded areas and beaches, the best places to eat, and don't forget to get a cocktail in his own bar in Chora, you will not regret it.
So don't hesitate, go there for sure and enjoy your journey !