In reply to Oujmik:
I get to visit quite a few hotels in Blackpool while at work, and to be honest the majority of them are awful and outdated by about 50 years.
The only establishment that I would consider OK and ticks your boxes is the De Vere / The Village. Its not in the centre of town. Its a mile as the crow flies to the Tower and a 10/15 minute drive to the Tower, provided you don't go during the usual rush-hour times.
Its right beside the zoo and opposite Stanley Park. I have no idea how much it costs but its the only one that I would even think of going to.
You could take a punt in any of the hotels or B&B's in the centre of town many of which offer free D&V, food poisoning, insect bites and all with access to extremely drunken or stoned stag/hen party guests milling around. Don't worry because you can easily outrun the spice-head zombie's scattered around the town.
You could even try one of our many brothels. The beds may even be more hygienic than some of the £10 per night B&B's.
If you are willing to Travel than you could go for the Travel Lodge in St Annes. Its a Travel Lodge and you get what it says on the tin.
Edit
Just remembered there is one more hotel that I would stay in which is south of Blackpool Pleasure Beach. Its mostly for people with complex medical needs and general wheelchair users. Its fekin awesome and specced out beyond the likes of the Hilton and the Imperial Hotel. http://safehandsholidays.co.uk/blackpool/
Every hotel in Blackpool should visit this place to see what a modern establishment looks like in the 21sc century.
Post edited at 21:52