Hi, I live in Tocil currently
It's medium for social life, in my experience, people haven't been loud or extremely drunk, noone in my flat has thrown up. Tocil is a really good location like it is near humanities/the library/ maths/ tesco/ the gym.
Like about 5 or 6 people go out out of 12 of us in our flat. About once or twice a week, not so much in this term (exams). And we pre together in the kitchen but people aren't usually loud coming home. Obviously all flats differ, but I don't think Tocil is party central, although it's still fun.
Be aware that if you put it on your list at all, even 5th or 6th place, you are likely to get it. It seems that way from this year anyway, no-one in my flat seems to have put it as their first choice.
Westwood is the furthest accommodation from campus. 15 minute walk maybe?
Avoid rootes. I've heard that bluebell is quite quiet. But it is the most expensive accommodation.
Good luck
Don't worry about it too much.