Fantastic place with magnificent view over the Mirabello Bay (yes, the picture at AirBnB is no photographer's trick, but really real, no kidding). The beach (some 5 minutes downhill walk) is cosy with two beach restaurants and sufficient sunbeds and umbrellas to please all the guests (as of the second half of September, might not apply in full season). Aghios Nikolaos city center is some 3 km away, but who would venture to go there with all basic amenities at the beach?
Kostas and his mother are very nice hosts. The appartment we had was nice, clean, quiet, though equipped in a bit of a Spartan way.
If you decide to sleep with doors wide open to hear the ocean hiss in the night (yes, that quiet the place is), then be prepared for the mosquitoes. Not many (most of the time), but some of them rather nasty. The best way to keep them off are those smoking spirals used generously all through the night.
All in all I'd go there again for another week or two.