Way overpriced and very basic. No breakfast, beachs toweks, fitted sheet on my bed/just a sheet to cover the mattress and and a blanket. Bathroom small, outdated/damaged fixtures, saw roach wings on the floor my last night. Window shutters don’t close so you can’t block the sun in the morning. I initially booked it based on proximity but there are hotels only a few minutes up that were well kept/cleaner (met people on the trip and saw their rooms) with free breakfast, beach towels and pool and minutes walking from the beach. The kicker is they paid about 125 euros ($145h less than me. Look at the Alkyoni hotel, Astir of Naxos, Princess of Naxos. A little farther out which looked nice was Imperial of Naxos. You will need a car to properly explore the island anyways. Kalergis felt like a glorified hostel in my opinion.