Bill and John's place was incredible. Centrally located right near the sights and sounds, as well as public transport. We had a very short stay on our way back from the islands but this was the best place to rest and recoup before hopping on our flight. The bathrooms, in particular, were just stunning. The size was perfect for three couples.
The apartment is gorgeous and well-appointed. The rooftop views are just stunning - you can see both the Temple of Zeus and the Acropolis. The sunset and sunrise views from the roof are highly recommended (though do require a hefty flight of stairs up to the top).