We booked the transfer service that Rena suggested (it's the cheapest I'd come across!) and there was a porter waiting for us at the main square in Oia.
The porter took us and our luggage down to the house, which is tucked away on the side of the cliff.
Rena greeted us, speaking French with some English and explained the house.
The fridge was filled with water, local food, etc.
Wifi works best out on the terrace, as you are staying in a cave!
The home is a studio, it has no walls and has an open bathroom (with no door) but still magnificent.
We loved the jacuzzi, using the grill and relaxing on the two private terraces.
If you haven't been to Oia, just know that everywhere is a trek, and be prepared to walk. This home is quietly hidden away from the busy, touristic spots of town.
There's air-conditioning, which we used at night. But during the day we had all the windows/doors open. Use the bug spray in evenings against mosquitos!
We used the kayaks, which were amazing. But you should only take them out if you are a serious kayaker. As the climb down to the sea is steep and the current/waves are strong. My husband and I grew up on the water so we were fine, but we could imagine others struggling if they weren't experienced.
We absolutely loved our stay and cannot wait to return. Rena is lovely, genuine and very accommodating.