This place is extraordinary. I would even call it magical. The location is perfect. And for me, it was a dream come true as I've always wanted to go to Greece, and this is the quintessential place. The balcony looks right at the church with the blue domes that's in all of the pictures.
As for comfort, a King bed is a big deal for us so that was perfect. The living area where we could relax and look at the stunning view was really nice. Comfy couches and cushions.
In the category of "surprise and delight", the breakfasts were amazing. Not just pastries, but a hearty breakfast - even warm a few of the days - was unexpected and made our stay especially wonderful. There were robes and slippers, too!
As for people, Efi, the "concierge" was super responsive and available via text for anything we needed. Tim, who met us and carried our bags up (as well as helped when we had a hot water/hot tub challenge) was awesome. Tamara, the housekeeper, was a sweetheart and even brought over an umbrella of her own for us to use. Fanis&Tina were also responsive and cared deeply that our stay was great.
The stairs are something to note. There are a LOT of them and it's a bit rigorous, as not all of them are even and it's not consistently well lit on the path, so be careful, especially at night. It was a great workout, though!
Definitely opt for transport to be handled for you - a driver meets you at the airport and the porter is waiting upon arrival to Oia to carry your bags. SO worth it! Note that it's a shared ride, but the island has pretty much one main road so the one stop we made before Oia was super quick.
Enjoy - you will love it!