Cambridge college decision - economics

If you're looking for a slightly more tight-knit community, i would recommend selwyn over the other 2. In my opinion selwyn also provides better value accommodation, with all 1st year rooms being en suite, fairly spacious, and some are as little as £180 per week which I'm fairly sure is better than what you can get at the other 2.
If you prefer the large, grand, and spacious colleges, I personally would recommend St John's just because I've been told it has a better overall atmosphere compared to trinity, but take this with a grain of salt. I've never seen the rooms at St John's but the ones I saw at trinity were huge, a little more pricey though.
When it comes to selwyn, keep in mind they tend to be a little harsh when it comes to admissions. It will naturally differ by course, and it's not much worse than any other college, but I was told during a subject talk at selwyn that they have a habit of giving A*A*A*A* offers to people who take 4 alevels. Idk if it was just to scare us but yeah, pretty intense.
I've heard good things about the food at Trinity, not much about John's, and supposedly selwyn is pretty well known for its brunch? A little subjective I suppose but it'll be difficult to find an objective difference between 3 colleges with decent catering.

Hi I’m in yr13 and applying to Cambridge for economics.
I live in the uk but will be classed as an international applicant.
My predicted grades are 3A*s and an A, with A*s in maths and fm.
I’m trying to decide on which Cambridge college to apply to, but I haven’t decided yet.
My main priorities are decent accommodation (ideally ensuite but not too pricey), good catering, and being reasonably close to the Sidgwick Site. A larger econ cohort would be nice, but it’s not that important.
At the moment I’m looking at trinity, selwyn, or st john’s, but I’m open to other suggestions. Does anyone have any recommendations or advice?