UC Irvine, UC Davis, UC Santa Barbara, or Cal Poly SLO for undergrad computer science?

I going to apply for transfer admission in the summer for 2016 school year and I don’t know which school would be better for. I do want a college that has excellent professors and has 24/7 study rooms.

Apply to all. You want to keep your options option since CS is very competitive. Better not to have all eggs in one basket. You will find excellent professors and study rooms at all of the campuses.

All have excellent faculty, adequate study facilities and a kick ass rock wall. I don’t think any of them take summer transfers

Not your question but, these schools are really competitive, particularly for CS. You will want to apply to all and see if any accept you. If you are at California CC, use the Transfer Admission Guarantee (TAG) program for your favorite UC. If not, apply really broadly… lots of high stat applicants are turned away from these schools every year.
Good luck