Yes I definitely recommend staying in a windmill! Sleeping inside an ancient flour production building was a very unique experience. The mill is utterly charming with a good sense of space despite its size. The garden has sun and shade and it was great having a private outside space in a town. Neapolis is more like a large village. There are many very good places to eat. We also recommend making use of the bus services.
Poppy is very friendly and she showed us where all the nearby important sites were which we whizzed around due to not wanting to swim in the sea in April. We will come back for sure four days was not enough!