International students help me out!

I'm an international (M) student, I have been accepted to UMD college park for an undergraduate degree in Computer Engineering. I wanted to know about the student life for an international student at UMD.

1. What's the vibe like? In terms of cooperativeness, and in general
2. Housing
3. General Amenities
4. How difficult is it to approach a professor

(I wanted this info to compare it with Purdue, I'm stuck between UMD & Purdue)