Maria has been very responsive and answered our messages within minutes. The person that came to pick us up didn't offer to help with our luggage, but they have given us some great tips about places to eat. We had cold water waiting for us in the fridge which was appreciated.
There were a few issues which I have also mentioned to the host and hope future travelers will see some improvements. We only stayed one night in Oia and the rest in Imerovigli. I will mention a few things for future travelers.
The biggest issue is that there was mold on the ceiling in the bedroom - big health risk and a big no-no if we knew.
The bathroom wasn't cleaned properly and there was hair left in the bathtub.
The floor was not cleaned at all and our feet were black within minutes of walking barefoot (also no slippers provided).
Also it's extremely humid inside the house (I didn't see any dehumidifier).
Lastly the Wi fi signal is very poor and doesn't reach in the bedroom, on the terrace or in the bathroom.
Not a massive issue but bare in mind that the toilet is located outside the house.
The location is great and exactly as described with the blue domes within minutes of walking (loads of stairs though and some quite steep - if you have any walking problems I would recommend you to find something closer to the main path). However for us, it was too expensive and we got little value (no shower gel/shampoo provided, no snacks or small small touches apart from the bottle of water).