St. Lawrence is a small, beautiful liberal arts school in very upstate New York. Academically it’s on par with all the other schools you are looking at. I think about 10-15% of students participate in Greek life, and it’s not as huge of a party school as schools like Bucknell or Trinity. The dorms and food are also supposed to be nice. Also, they are good with merit money. The downside would be the location. It’s probably freezing where it is, in Canton, NY.
About Trinity now. Yes, the neighborhood is supposedly horrible. Though it does attract many wealthy people, not everyone who goes there is rich and snobby. About half the students there get need-based grants. Really though, all these schools have a party scene. Trinity’s is just bigger, I guess, which is a downside to it. However, it seems like it’s a beautiful, very good, small, liberal arts school.