First let me say, that you can first screen these guys, including the disabled guy, and if they don't meet your criteria, you don't have to deal with the service dog issue at all.The service dog issue isn't horrible, though, if you know the laws.You can deny this dog.  

I even had some that got jobs as lawyers and continued to stay for several more years after graduation.If you can market directly to the grad students, then you can avoid the undergrads, which are horrible high-maintenance noisy party-animals - except the undergrad engineering students, in my experience.Grad students are smart, resourceful, and reasonable to deal with in my experience for the most part.  

Providing public internet (even to just your tenants) is a horrible idea. ..an absolutely horrible fcuking idea...  

Originally posted by @Brandon Turner:The main purpose for this is, if for some reason, the debt is not paid over a long period of time (which, of course, shouldn't be the case because you should just evict) but if that debt did remain unpaid, then it would accrue interest just like any other debt like credit cards, etc.This really seems like a horrible idea.

But, then I'd have to deal with furious tenants because maintenance was horrible, and I had no control over that.  

He was horrible.

@David FerretteI had a tenant that consistently paid late with fees only to find out that she was horrible in keeping her own personal finances.

However, that being said, in EVERY scenario where the tenant had a pet (dog or cat), we found a lot more damage than normal wear and tear (horrible smells, ruined  or scratched carpet, pee smell in the wood flooring that was impossible to get rid of, etc).  

I especially hate missed dog poop and when tenants claim to be handy and "fix" stuff in a horrible way and I have to fix it again to undo the mess they made.

Horrible.