Just a note that you may not get a choice to go in undergrad accommodation - most universities will only put first-year undergraduates in the undergraduate halls and no one else is able to live there. This is usually because of lack of space in the halls as they often have to guarantee accommodation for all first year undergrad students... when I started at university, there were about 10 people in my undergraduate hall who spent the first month sleeping on the common room floor because they didn't have enough rooms for everyone! There were about 200 people living in my hall and every single one of them was a first-year undergraduate (age 18-19).
Likewise, usually only postgraduate students will be put into postgraduate halls, so if you apply for a place in a hall, you may be assigned to either one of the postgrad halls or the halls reserved for international students if there are any.
I've studied in the US and the UK and lived in undergraduate residence halls in both countries:
UK halls
- 16 people on my floor (11 girls, 5 guys)
- 4 rooms were double rooms (2 people in each) and 8 rooms were single rooms... the students that had taken a gap year first were assigned the single rooms and the students who had come straight from high school (like me) were assigned the double rooms.
- the rooms had sinks in them
- 2 toilet cubicles for 16 people (one bathroom) - they were unisex so both the guys and the girls shared the two cubicles and anyone could go in at any time
- 1 shower
- 2 baths (although one of the baths was out of commission all year because one of the guys stored his rugby gear in there)
- 1 semi-kitchen (just a sink and a microwave)
- Everyone was friendly - we kept our doors open so we could socialise, we went out for meals and nights out together, we went down to dinner together in the evenings
- Lots of booze around and a few parties on the floor
US halls
- About 20 people on my floor. It was girls only as the guys all had to live on a different floor
- Mixture of single and double rooms
- Sinks in the rooms
- 4 toilet cubicles and 4 showers for the floor. Girls only. You needed a key to get into the bathroom
- Small kitchen on a different corridor (I never used it so I don't know what facilities it had)
- Everyone kept their doors shut, so I could go days or even weeks without seeing some of the girls I lived with
- No real socialising with the whole floor
- No booze, no parties (it was a dry campus and obviously there's the over-21 issue)
- We felt like we were treated like kids (I was 20 at the time) - 'free drinks' meant free Pepsi (in my UK uni, 'free drinks' meant we were going to have major hangovers the next day) and they even had a 'colouring competition' while I was there... the prize was a pizza party for the floor... except that because the floors were single-sex, it would have been a boys-only or a girls-only party!