My wife and I stayed at Naxos Diamond Apartment for 3 days. We loved our stay there. The place was very clean. Nikos was a great host and always available. He helped with our check in and provided some great recommendations of places to visits, eat and rent vehicles from. He was even able to help with our transfer on our way out.
The place is spacious and well equipped. They have daily service with cleaning, and laundry at request (free of charge). The location was also great, as it was at the centre of the town, walking distance to all the great places, but also quiet and residential to provide privacy and away from the noise.