A block of 20 rooms has been reserved at http://www.thelistelhotel.com/ in downtown Vancouver. The rooms are $205 Canadian per night. These are reserved until April 20.
There are also rooms currently available on campus at https://admin.triumf.ca/d2w-sec/TriHouseRequest.d2w/requestform. They wouldn't reserve them for us, so you need to book them early. I don't know what these rooms are like - I am sure they are okay but no luxury. As far as I know there are no hotels near campus. I'll add some more options in a bit.
For those of you who aren't Canadian or American citizens, Canada has new visa rules described at http://www.cic.gc.ca/english/visit/eta.asp, You get the visa online so it isn't a hassle, but they will refuse entry to Canada if you don't have one. You'll have to check the website to see if you need one.