This is a good choice in old town Istanbul for a great view, good food and lovely atmosphere.
Being so highly rated on tripadvisor does open a bit of a pandoara's box though - they have obviously got busier than they can handle, and here's where it all fell apart at Defne. The service was always friendly, but it was like being at Fawlty Towers - comical. No point going into all the detail here, as apart from being repeatedly apologetic, our host was just so genuine and warm, his establishment is still worth 4 stars for the experience as a whole.
A great night.