Holiday Inn looks like the best bet around there--especially if you plan to stay for the aftershow. I always like to be within walking distance of the venue, and that's only about .2 of a mile away.
I'm actually staying at a retreat house nearby, near Limehouse station--I'd recommend it at 46 pounds a night, but they're all booked up now.
Pubs I can't speak to, and I don't know how close the one Karborn mentioned is to the venue. From what I've read about the Troxy area, there's "absolutely nothing" around it. However, I have an e-mail out to Karborn, hopefully he'll get back to me with a few ideas...
I was going to fly back on Saturday, but it's twice the price to do so, so I'm going to stay an extra day. I'll probably be glad I did if things are wrapping up at 3 am....