All first years will get a choice of which halls they want to go to. Only a few are reserved for mature, international, 2nd/3rd years, such as Sherifield.
You should choose St patricks, its the best! I personally really like St pats (hence i live there). Rooms are a good size, nice food, and nice meal times. Our meals times are about 1hr and 30mins and 2hrs for dinner. Most halls only allow 30mins -45mins meal time. It is a bit of a walk compare to some other halls but after a while you get use to it and its not that bad. There's corner shops really close so good place to buy some pasta and pizza etc for sat and sunday evening meals.
Downfall - tiny bar! really really tiny. And a crap JCR but everyone just goes to sherfields which is like 1min walk.