I booked a vacation house on the coast and we drove to the place. Upon arriving the driveway was blocked with other people's cars, to which none of the owners were anywhere to be found.
That must have been so frustrating!!! Were you able to find them fairly quickly? And how?!
We did not, instead we had to park very far away and walk the rest for the first entire day. Eventually the people came back and moved the cars in the middle of the first night so we had to sacrifice more time the next day to retrieve our car.
SO frustrating. Hopefully you were able to provide feedback to the owner. Not sure they could/can *do* anything about it, but still -- maybe you've helped pay it forward to the next visitor!