Perfect location, only a 5min walk into the city center and to the public bus station (which is going to save you a lot of money).
Mathios and his team are very friendly, we got fresh towels every day.
The room seems to be quite new, the air conditioning works perfectly.
The only problem is that tall people will not be able to stand next to the bed, because the ceiling is very low on the upper level and going down the stairs at night can be a little tricky.
Afterall (for Mykonos), the price-performance is pretty great.