Our stay was OK. We never saw Maria but communication was good. This was not a typical Airbnb, but a hotel.
We arrived via a 'free' taxi ride, but there was a clear expectation of a tip or that you sign up for a tour with the driver.
Getting around the island was difficult on foot, and relying on public transit was a disaster. We could have used some guidance for that.
The room itself was superficially beautiful. However, some aspects of the apartment do not function well. For example, the shower will always drench the bathroom floor (we tried every angle) and therefore the inside of the bathroom door had some mold growing on it.
Santorini is expensive, so this stay was OK with all things considered.