Have a fabulous sunset, some palms on the foreground, some bungalows on the water. What do you want more? This must be the waiting room to the paradise. It is really worth the money and effort to book a room in Bang Bao for even one night. There are not too many options at the moment, few on the high end and others on the low end, expensive (for Thai standards) maybe but the experience is great. Alternatively come with a scooter in the evening for dinner, but pay attention the roads are quite dangerous.
Check Top 6 sites to take a sunset picture in Koh Chang for a full island review