Konstantinos' apartment was great, it is situated almost perfectly near plenty of restaurants and bars but without any of the noise. The apartment itself was tidy and came with spare bedding and towels, and he provided a couple of snacks, some wine and beer when we arrived. The balcony was also very nice to sit out on at any time of day, especially with a nice glass of wine!
Konstantinos was also very accommodating as our flight was delayed and allowed us to self check in when we could, and was quick to fix the air conditioning when it begun to leak slightly.
Beware however that the spiral staircase in the apartment may be difficult to get heavy suitcases up!