Need to buy a cheap but reliable car. Any recommendations for dealerships or other sources?

Good FRIDAY afternoon :)

I have decided to stay in Carboneras and probably settle here and am starting to look for a used car. Couldn't care less what it looks like so long as it's not too big and it is cheap, reliable and won't die climbing hills. 

Does anyone here have one for sale, can recommend someone who does, or recommend a good car type to have in this environment/ a reputable second had car dealership (if that's a thing)? 

I realise I probably won't find anything in Carboneras and am happy to search further afield. 

Any suggestions most gratefully received <3