I have visited Frangokastello regularly since 1988 and while it has added a number of taverns and small hotels over those 25 years, the place has still managed to escape mass tourism. No large hotel chains here. The only tourist trap (and eye sore!) is the tavern directly across the street from Frangokastello castle. It should be avoided as it is as unauthentic as it comes. Most other places are family-run taverns and apartment hotels with many regularly returning guests.
This place is ideal for people wanting to completely relax. Because it is somewhat remote, it is a bit difficult to get to and from, or to visit other places on the island from here. But if your idea of an ideal vacation is like mine: Quiet surroundings, gorgeous sunsets, good food and plenty of beaches to chose from, not to mention wonderful starry night skies, this might just be the place for you.