We have stayed at 3 hotels in Turkey, this one was by far the coolest and most memorable. Not only that, but each person I spoke to in the town, when I told them where I was staying, they were visibly impressed which tacitly stamps the Sultan Cave Suites as the nicest place to stay in the city.
The food was CRAZY good, both breakfast and dinner. The staff went out of their way to ensure that we were well taken care of and looked after. Hands down, one of the coolest places I will ever have the joy to stay. We spoke with a British gentleman who came for one day and ended up staying for 8.
Treat yourself right, stay at the Sultan Cave Suites and book an extra day, you'll be happy you did (I'm writing this from Bodrum, a bit annoyed at how I shortchanged myself by only giving myself two days in Cappadocia, my wife and I both wish we had stayed an extra day at the Sultan Cave Suites).