They cut tickets and charge fees in front of restaurants under the name of entrance fee.But I don't think there is a legal basis. If you want to watch the sunset and see Ayvalık from the hill, you can go.
It has a great view. The way is fine.
I just bought tea from the restaurant, unfortunately the tea was bad (stale).
There is a toilet, but it is very dirty.
The view is amazing, but it was more natural 15 years ago. With the flying of the garbage left by the guests, the immediate front parts of the terrace have turned into a garbage dump!!!