Hi, I'm an undergraduate here.
I say the faculty are great, particularly in materials science and biophysics (the astro people often also work in the School of Earth and Space Exploration https://sese.asu.edu/
). In biophysics, we have a "Center for Biological Physics" which includes people working on things like intrinsically disordered proteins, molecular dynamics simulations, and people in the NSF-funded BioXFEL consortium. Also some really good faculty for materials science like Prof. John Spence and Prof. Fernando Ponce.
It can get really
hot in the summers here, but it's a dry heat as we Arizonans say. Rents around the Tempe area are on the rise, but not exorbitant compared to some US cities. Lots of resources (I have access to at least five computing clusters/computers off the top of my head), and we have centers with electron microscopes and a soon-to-be operating compact x-ray light source (CXLS). It's quite a large campus (~50k students at the Tempe campus last I heard), so don't expect a small rural college vibe. Public transit around Tempe is pretty decent, but Phoenix is a large metro area, so cars dominate a lot if you don't get housing nearby.
Happy to answer any other questions if you guys have any.