Our group of 15 stayed at Villa Natali to celebrate my wife's birthday. The size and layout of the house was perfect for such a group - with areas to congregate indoors and out, as well as places to find a quiet moment.
The pool and outdoor kitchen are spectacular.
The nearby beaches are quite rocky, but with a car the nicer beaches of western Crete, the old town of Chania and the mountains and wineries are all easy to reach.