Oia keeps most of its houses behind plain walls, and Old Castle Oia is one of six rooms behind one of them, kept by Mr and Mrs White. There is a pool that holds a view and stays heated through the colder months, and a second at ground level for anyone who wants it. The house takes no guests under eighteen. For anyone who wants the days arranged around a pool and nothing else, this is where you come.
Old Castle Oia runs on two pools: one built to sit at the edge of a view, one heated so the colder months don't close it. Breakfast is brought to the room, so the day can start without leaving it, and housekeeping calls daily unless you would rather it didn't. A concierge arranges what happens next — a car, a transfer to the airport, a hike into the hills behind the town, horse riding, or a morning out with a canoe or diving gear, depending on the day. Six rooms, which is why the pool is rarely shared with more than a couple of other people. The house belongs to Mr and Mrs White.
Old Castle Oia by Mr and Mrs White sets a minimum age of 18 in its own house rules, written at mrandmrswhitehotels.com, and read there on 11 August 2026. A house whose rule drops below eighteen, or stops naming an age, is taken off HUSH — how every house is checked.
The house keeps a freshwater infinity pool that reaches toward the caldera, edged with sunbeds and umbrellas and angled at the sunset. Below it, suite terraces step down the rock with their own plunge pools and hot tubs, so a morning swim can be had in near-total privacy. Late in the day the water turns copper as the sun slides behind the far headland and the fishing boats swing at anchor far below.
Sleeping quarters are true cave rooms, tunnelled into the caldera and finished in soft white and warm earth tones. Arched niches hold the bed and a reading corner, a small window is punched through metres of rock to catch the sea, and a woven throw or a splash of Cycladic blue is the only pattern in the room. The thick walls keep the suites cool and hushed through the bright hours of the day.

Diving (off-site)Hiking (off-site)Horse riding (off-site)Kayak or canoe (off-site)Windsurfing (off-site)
3 nights · 2026-09-23 → 2026-09-26 · 2 adults
Asking the house for its rooms…
location is great! at the heart of Oia. The sunset there is amazing! our room was very comfortable and spacious (we had the one with private pool).
Amazing location
The property location is beautiful, incredible sunset views, very clean rooms and the staff was amazing! Bianca and Sophia were so thoughtful, above and beyond expectations in all matters! Thank you!
Breakfast was varied and tasty, fresh orange juice a nice touch, stunning views of the sunset from our balcony, free upgrade upon arrival with jacuzzi facing the sunset. Incredible views from the infinity pool,...
These are the property’s reviews as our booking partner holds them. We have never collected a review, and none of this is written or checked by us.
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Everything below is the property’s own text and its own list, as it publishes them. We have not rewritten any of it.
Stunning Clifftop Location
Perched on the cliffs of Oia, Old Castle Oia provides elegant accommodation with stunning views of the Aegean Sea.
Luxurious Amenities
Each unit is equipped with a small refrigerator and a safe, while guests can luxuriate in the private outdoor hot tubs and enjoy breakfast served in the suites.
Convenient Services
The property offers catamaran rental assistance and can arrange airport shuttles, ensuring a seamless and enjoyable stay.
Book your stay at Old Castle Oia now to experience luxury and tranquility in the heart of Oia.
* This property will not accommodate hen, stag or similar parties.
* Please inform Old Castle Oia in advance of your expected arrival time. You can use the Special Requests box when booking, or contact the property directly with the contact details provided in your confirmation.
* Guests are required to show a photo identification and credit card upon check-in. Please note that all Special Requests are subject to availability and additional charges may apply.
* Pets are allowed in this property (up to 15 kgr free of charge)
1 pet/room
Service animals are welcome, and are exempt from fees
Restrictions apply; for more information contact the property.This property does not accommodate bachelor(ette) or similar parties.
Please inform of your expected arrival time in advance. You can use the Special Requests box when booking, or contact the property directly using the contact details in your confirmation.
Guests are required to show a photo ID and credit card upon check-in. Please note that all Special Requests are subject to availability and additional charges may apply.
Guests under the age of 18 can only check in with a parent or official guardian.
A deposit may be required at the property.
The house lists these as things to do from here. Where a line is marked off-site it is not on the property — a dive site, a trail, a stable. That mark is ours, not theirs.
Kept warm outside the summer months, so a swim doesn't depend on the season. The second pool sits at the edge of a view and is the one worth the walk down.
Canoeing or diving, arranged through the concierge depending on what the day allows. Back in time for the pool and a late breakfast in the room.
The concierge can arrange riding or a hike into the hills behind the town for anyone who wants a few hours away from the pool before coming back to it.
Food comes to the room on request, and a massage can be arranged for the afternoon — two ways to keep the day from requiring you to go anywhere at all.

Answered from what the house itself publishes.
Yes. Old Castle Oia by Mr and Mrs White, a boutique stay in Oia, Greece, sets a minimum age of 18 in its own house rules, so every guest on site is 18 or older. We last read the rule on 11 August 2026.
No. The minimum age at Old Castle Oia by Mr and Mrs White is 18, and it is the house's own rule rather than a preference — anyone younger cannot book or stay. This page quotes where the rule is written.
Old Castle Oia by Mr and Mrs White is a boutique stay in Oia, Greece. Its own site is https://mrandmrswhitehotels.com/destinations/santorini/old-castle-oia/.
Check-in at Old Castle Oia by Mr and Mrs White is from 03 PM and check-out is by 11 AM, as the house lists them.
No — Old Castle Oia by Mr and Mrs White lists itself as not accepting pets. Ask the house before you book if it matters to your trip.
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Every house here is adults only: the property's own rules set a minimum age of eighteen. Whether a dog may come is on each page.