Second year staying in halls for first time.Watch
Student life, in partnership with UEA
I don't think this is weird at all. I think it's a good idea considering how last year went. I wouldn't be afraid to mention that you're in your second year, as they're bound to find out later anyway.
I went into halls being almost 2 years older than some and found it fine. You'll find a lot of people do gap years or join university at a later age. There were some in my halls that were 25. Given your age though and that you'll be in your second year, you might be housed with people in a similar situation to you, as some universities do this.
I hope this helps!
Chloe - Official Student Rep