Most people stay in the Staybridge Suites, which is less than 100 yards from the front door of the G.O. (where they train for ground school). It is a clean hotel and each room has a kitchenette (so you can even save money by not eating-out every lunch-hour). Frontier's rate is $59 for a room with a queen and a pull-out sleeper couch, or for $69/night you can split a two queen bed suite with another commuter in groundschool. That includes a decent warm breakfast every morning and free dinner/beer on Tues, Wed, and Thursday nights. Most people stay 5 nights a week and commute home on Fridays after class. You'd pay for less than 15 nights before you start sim training, then you can bid for sims in San Fran or Miami, then your hotel is covered (plus you get per diem).

No time in traffic, no stinky crashpads, a room that cleans itself, and some food thrown in, I'd say that is your best bet.