My friends and I had an excellent stay in Casa Sofia in May 2015. We would highly recommend it for a small group of friends looking for a traditional cave house in Oia. The house is a great size for three or four people looking for a simple, traditional house with great views and good facilities. Everything was clean and well prepared (there was a maid service each day) and we felt very taken care of. The host was very helpful and friendly - they met us in the centre on the first day, helped with the bags and showed us around. If we had any questions during the stay they were available to help and make suggestions.