John's place is really well situated in Oia. We had no problem getting around. We were really looking forward to using the jacuzzi, but it wasn't working when we got there. In John's defense, he mentioned when the jacuzzi would be open in the listing, but it was hard to find, and I missed that detail when I booked. Make sure you read the full listing!
Also, we did not know that we were sharing an outdoor space with the room next door, so we were disappointed by that.
In reality, we spent all of our time sightseeing and on the beach, so it was no big deal. To John's credit, he is extremely responsive and kind (he sent technicians to try to get the jacuzzi working for us!) and we loved our stay in Oia. Barebones amenities in a cool cave home - with the right expectations, would definitely recommend.