I very strongly recommend this host and this appartment, which are both simply perfect, in terms of host professionalism and appartment central location, cleanliness, functionality & comfort.
Having just check-out from a suite at one of the seaside hotels, I felt no letdown in quality. The bed is perfect & the optimal use of the well-organized space, plus all cooking facilties & amenities available, far surpass many "business hotels" worldwide.
There is an additional aspect which makes this place stand out: the water & energy efficiency, and the decent sound & thermal isolation compared with most buildings. You could actually live here in a way which is energetically & environmentally sound, all the while surviving near or sub-freezing temperatures in the Thessaloniki winter.