If you look for quite holidays, avoid the trourist crowd, Nikola's place is really perfect. The cave house is cozy, stylish, with the sea view terrace. You could enjoy the the wave sound in the quiet evening.
The house location is near the city center Oia & Fira by car. Just go down by foot not even 3 mins, you could find the Pori beach which is quiet, no tourists. you could enjoy the beach as a private beach.
Nikolas is really nice, he recommandated the nice place and restaurants in the island. The magazine about Santorini is so useful for visiting the island.
My husband & I had a really nice time in Santorini at Nikolas's cave house. :)