I'll take your Withnail and I holiday and raise you our Deliverance holiday!
We booked a trip around the American West, which had very variable accomodation. Most of which was either great or functional and adequate.
However there was one leg of the trip where the accomodation was like something from a horror film.
It started with a very long windy deserted road that wound higher and higher up a mountain. We thought we must have taken a wrong turn but couldn't find anywhere to turn around so we had to carry on, and eventually we came to the place, complete with a dodgy broken sign.
We drove in and the cabins in the woods were like something from deliverance. Red necks cooking over fire pits stared at us. I saw more guns in those few minutes than ever before in my life. We stuck out like a sore thumb as foreign tourists.
We checked in and were directed to our accomodation but weren't given a key. Thinking maybe the key would be in the door we went to check it out. The "cabin" was awful, grotty, rickety, unclean. The fire pits were the only means of cooking. The main door was a flimsy screen door with no obvious way of locking it. When we queried the security the owner seemed to think we were bonkers for wanting to lock the door and got quite agitated.
There was no mobile phone signal and no phone in the "cabin" just a payphone in the "reception". So having decided that staying there was likely to result in fleas, robbery, rape, murder or any combination thereof we drove back down the mountain to try to find alternative accommodation or a phone to speak to the travel agent.
We did eventually find alternative accommodation in a perfectly normal motel. And when we told the cabin people we weren't going back they yelled at us down the phone. We didn't get a refund but considered it was probably a lucky escape.