Cheap-ish hotels in Bristol?

Im coming over at the end of next week (28th to 30th April) and need a cheap-ish hotel or b&b.
Got one booked at the mo, but £150 for two nights is a tad steep for someone of the unemployed persuasion, so if anyone can think of anywhere that charges less id be really grateful.
Before anyone says it - I have f*cking googled it, but seem to get the same results time and time again - all the expensive crap is fully detailed, but sod all about the smaller places - Travel Lodge, Holiday Inn etc are all fully booked (hence the current booking at City Inn)
**edit** forgot to add, could do with being somewhere near Colston Hall - Im absolutely useless when it comes to getting around cities (being from jersey...), but know the area surrounding Colston Hall (wanna know just how useless... came over in 2002 for a show at Colston Hall, ended up asking for directions, only to find out I was right around the corner!)
Got one booked at the mo, but £150 for two nights is a tad steep for someone of the unemployed persuasion, so if anyone can think of anywhere that charges less id be really grateful.
Before anyone says it - I have f*cking googled it, but seem to get the same results time and time again - all the expensive crap is fully detailed, but sod all about the smaller places - Travel Lodge, Holiday Inn etc are all fully booked (hence the current booking at City Inn)
**edit** forgot to add, could do with being somewhere near Colston Hall - Im absolutely useless when it comes to getting around cities (being from jersey...), but know the area surrounding Colston Hall (wanna know just how useless... came over in 2002 for a show at Colston Hall, ended up asking for directions, only to find out I was right around the corner!)