You'll get accomodation but not necessarily where you want. You can't pick your halls (only 2nd and 3rd years get that luxury-and still dont necessarily get what they pick) you just choose how many weeks, what type (basin, no-basin, en-suite) and mixed or single sex.
Basically Keele can't always fit your exact 3 choices to what they have so you might get only get 1 of what you ask for. Allot of the blocks are single sex and most people request mixed, it always happens that way. People always want basins too and there aren't enough rooms with them in too.
I asked for 37weeks, with basin and mixed sex. I got 37weeks, no basin and single sex. The basin didnt bother me too much, only shared a bathroom with 10 other girls and was never a queue. Single sex was fine, we mixed well with an all lads block and at times it virtually was a mixed block but with the luxury of sending the lads (and their messyness) back to their block when we got sick of them. And getting 37weeks was brilliant-no moving all my stuff at Easter. In my opinion getting the no of weeks you want is most important.