Margarita was a great host. She was accommodating at every turn - she organized taxis for my girlfriend and I, a sunset cruise, and even let us stay much past our check out time on our last day so we could catch a later flight. The apartment is charming (although since it's a cave-style residence, we found it to feel quite damp inside especially at night) and had everything we needed. It's in a great little town just 10 minutes walking from Oia and around the corner from the best restaurant called Meze Meze (we ate there twice!). If you don't want to stay in the tourist-crazed areas, this is definitely the place for you!
Thanks Margarita!