If you’re like me and have a specific checklist for a place to stay in Oia - caldera view, private balcony, private plunge pool, view of the town, view of the sunset (in September) - then you should book this place. You get all of those things at half the cost of any of the hotels in town. The place is beautiful - even better than the photos IRL. Close to everything but just around the corner from the old castle in a nice and quiet part of town away from the noise of the restaurants and bars (though Oia is generally fairly quiet anyhow).
Privacy doesn’t really exist in Oia so you’ll often get the odd person wandering next to the suite in search of a spot to take sunset photos - and often crowds are perched on the ledges above the suite - but that’s to be expected anywhere you stay in town.
If you do the private transfer I recommend you splurge and go for the fully private vs. semi private. We had to wait at the dock in the car for about an hour for passengers on the next ferry from ours to arrive before we could leave which put a bit of a damper to the start of our trip, but the stay more than made up for it.
Highly recommend doing the day cruise as well - it was a great experience.