We stayed a family of four in August for 3 nights. I can summarize my review as follows: If you are not interested in the house itself but want a good location and adequate dwelling then this place is for you. If you take joy in the house you rent, then you may find this place less appealing.
The house is located very close to the happening streets of the main village (Chora) and a super market, yet is very quiet and less trafficked. It is also located 200meters and a only few steps from the parking close the school (ask for this location!). This is very important, since elsewhere one would be carrying suitcases along many steps.
The owner responds fast and the host is polite and eager to provide information. One should ask at check-in, how the window shutter closes. It is difficult to find out, if one first tries out at night.
The house itself is old, as expected and shown in the pictures. What is off-putting is the furniture seem to be a collection of leftovers put together, in order to create a livable space. Old are mixed with new with no consistent style even within a room. Some covers seem older than the term "rustic" would imply and do not inspire confidence. The bathroom is small and old. That makes the whole offering seem opportunistic.
My take is that the €200/night price has more to do with the scarcity of the offerings in the Chora.