Right as requested Mr Hayes here is some info on hotels. My cousin lives in brum so the info is from him I've not looked myself tbh. I myself will be going.
Hotel IBIS…In China town next to bars…£65 per night, max 2 people - 0121 622 6010, parking £10 for 24hrs over the road from hotel in secure car park?
ETAP Hotel …close to centre…£38 a night, max3 people - 0121 622 7575, limited car parking space
Campanile Hotel…2 min taxi ride from center...£70 for 2 people - 0121 359 3330, barrier on car park
That just about does it for the cheapest…there are others but you’ll be talking over a ton per night.