In general, it was OK, but next time I would look for something different when visting Thessaloniki.
From my POV, some basic things should be improved.
In first place wifi quality and availability of toiletries (shampoo & body wash, at least). Also, quite big problem caused lack of protection for shower- literally, it was impossible to use it without covering 2/3 of bathroom surface with water. As we were group of 3 adults, really not convinient for morning routines.