There are no really cheap rooms available. But some hotels in Bangkok or Frankfurt can be of good value with that code. Check dream hotel Bangkok....
I looked in Bali -- it doesn't get much cheaper than that -- and the deals were terrible. But, obviously, you're more likely to find something useful at a cheap destination than an expensive one.
I'm trying to figure out what hotel inventory BA is pulling from for their website sales. It's generally a small collection of bad rates at expensive hotels.