We had a great experience at the Windmill. Booking the windmill was very easy and Xenia answered any questions that we had promptly.
We had to contact Xenia when we were in the windmill a couple of times and any minor requests that we had were responded to and resolved quickly.
The windmill itself is in a lovely spot. Just 5 minutes from the beach and it's easy to walk into town. There was also a very attractive beach in the opposite direction from town with sun loungers and nice tavernas. It's a very picturesque walk to get there too.
I'd recommend the windmill heartily. My only slight advice would be that due to the unique and charming shape of the windmill sound can echo a bit, so if you're in bed and someone is making a cup of tea downstairs you can hear them pottering about. Not an issue really.