Blackpool is a classic example of a seaside resort that's been badly hit by cheap package holidays to the sun.
As such you can expect it to be full of hotels hanging on by their fingernails.
Also it's known to have lots of social welfare bed and breakfast establishments.
You'd need to be living under a rock in England not to know that.
If you're just going from A to B and want a stopover you're better off going with one of the chains. I actually like premier Inns.
One of the travelodges I stayed in though was as depressing a dump as I've experienced.