Or perhaps airbnb good?
DD, for air bnb you need to register and want payment up front so there will be a trail I am afraid.
All the hotels in Sarfend that I can think of want details but there may be some smaller ones
in the West cliff area that might take cash.
There are some pubs that have rooms so that might be an avenue to explore.
Shame the OH is about, you could have come to mine.
Best of luck in your search, FB.