What a building! And what a location :)
Staying here is a unique experience. The tower is wonderful, you are unlikely to stay in a place anywhere like it. You frequently find other tourists standing outside staring at the tower or taking photos. And on such a hot island, staying in a converted windmill is a blessing - it's built where it is because it catches the breeze!
Spending time at the top of the tower with a 360 degree view of the harbour, the palace and almost all of the old town, with the windows open taking in the sounds of the town is a lovely way to spend time reading a book or having your morning coffee.
The location is ideal, it's very close to the centre of the old town, easily within walking distance of all of the sights in the town. We had no problem walking up to the Acropolis and back again.
When we arrived we were warmly greeted and our host gave us really helpful tips on where to go, and just as important - where to avoid. There are lots of tourist traps - bars selling poor fodder at high prices - but thanks to the recommendations we had a great dining experience and mostly avoided the poor places. (Marco Polo was a particular highlight, you need to book but it's worth it.)
One nice touch was that when we arrived the fridge was stocked with wine and beer and there was a bowl of fruit on the table. Very welcome :)
The wifi is good but because the router is on the top floor I found it dropped out occasionally at ground level - not the end of the world.
If you're tall - even moderately so - watch your head! Some of the doorways and staircases are low, both inside the building and on the external steps leading up from the street.
The other thing for foreigners to note is that all used toilet paper must not be flushed! It has to go in the bin, presumably because the sewer system can't cope with paper and would become clogged.
When you're out and about, count the cats! Our top score for one day was 54. (But definitely don't touch or feed them)
If we're ever in Rhodes again, we'll be hoping to book here. It's fantastic.