Manchester is a really cool city. It's quite cosmopolitan ( though not as much as London) and is a favourite with students. Lots of really good bars, clubs, museums, galleries etc. It has a thriving indie music scene and lots of theatres. It was an ancient Roman fort town (chester comes from caester) and on the outskirts there are some good archaeological digs.
The Hull accent is lovely
Though I also think the manc accent is.
Hull is an unpleasant place......Nearby York is much nicer.