Easiest way to find it is to use Google Maps for Agia Nikolaos church in Ano Sagkri, then look for the AirBnb Sophia signs near the one lane road (1 lane total, not each way) that leads there. Very close to Temple of Demeter and a good base to explore the entire island.
Sofia wasn't there but her parents were and despite a language barrier they were quite helpful. The kitchen had pots, pans, tools (spoons for cooking noddles, etc.), and some spices, oil, and such already there. There was also some fresh vegetables but as the fridge sign notes that's not guaranteed for everyone. Beds were comfy, and it had pretty much everyone a person or family would need (fridge, stove tops, etc.) for a pleasant stay. Definitely would stay again.