We stayed for four nights at Aore Island Resort. There were ups and downs, but we did enjoy our stay overall.
The only way to get there is via a 10 minute ferry ride across the channel. Unfortunately our flight was delayed so we ended up doing this in pitch black that first night. That was pretty scary if I'm honest! You just have to trust that they know what they're doing.
When you arrive, you are greeted by the Australian owners and a coconut drink. The owners sit with you on the comfortable couches next to the restaurant area to go through the paperwork and talk through the amenities the resort offers. Even though we arrived after the restaurant was meant to close, they stayed open for us and the one other family that we arrived with.
Speaking of the restaurant, it was generally pretty good. As expected, the prices are rather high for local resorts but that's kind of to be expected considering you have no other choice. Unless you take the late ferry out and back on Friday nights, you'll be having all of your dinners at the resort. Quality wise, it was mostly quite good. I had one or two dishes that were only so-so, but I can't really complain overall.
The farés are really lovely, with comfortable beds and clean bathrooms. They have the traditional palm roofs, which is nice character wise but not great for keeping out critters. We ended up shifting to another faré after the first night because ours (Faré 5) had a crapload of flying ants that bit me multiple times throughout the night and a MASSIVE cockroach. Faré 1 was much better insect wise, though my husband did notice mouse poop in one part of the room. We also overheard others mention this problem with their rooms. The only thing we didn't see were mosquitos, which I believe they take great care to prevent in the rainy season. I will also note that the roofs are not 100% waterproof when it rains really hard.
One great thing: each faré has its own private deck with water views and an outdoor fan that is bliss in the afternoon heat. I spent a lot of time sitting out there reading.
The day spa is definitely worth indulging in. I had a full body massage that was HEAVENLY. And it's pretty decently priced as spa treatments go.
The snorkelling out in front of the resort is fabulous. On the adults only side of the resort, you'll see a lot of wonderful fish and a few bits of lovely coral. In front of the restaurant and on the families side of the resort, you'll get to see some amazing coral. You can also feed the fish right off the dock, which they provide bread for throughout the day.
The one thing I really didn't like was how remote it was. There are only a handful of ferries to and from the main island throughout the day, and they usually run either late or early. And there's no rhyme or reason as to why. We were so worried about missing our ferry back that we ended up arriving at the wharf almost an hour early and had to bake out in the sun until it arrived (and left late). I personally would prefer if there were more services because it does make you feel a bit limited about what you can and can't do in Santo.
Overall, if you're looking for somewhere with lots of character and don't mind a bit of rustic charm / critters, Aore is a lovely place to stay. It's also a great place to stay if you really just want to get away and not feel pressured to do much on your holiday. However if roaming Santo without a tour guide is your aim, you're probably better staying on the main island instead.