I instructed from 2007-2010, so my information might be outdated.
You set your own schedule. The 141 students have a syllabus and it's up to you to follow it, scheduling the student as often as they want or in line your availability. The aircraft were kept in great shape while I was there, the maintenance department is probably the best you'll find for instructing. As a 141 instructor I always had at least 4-10 students at a time. I spent most of my time at FSA working for various contract programs. SWISS paid a stipend and guaranteed me a full time schedule every week. RWL was the same but I don't recall a stipend. I made more per hour because I was a check instructor also. I don't remember how many hours I worked (pay-wise) but I flew about 600-700 hours per year and made about 40k each year I worked there. I left FSA with my ATP and about 600 multi PIC.
When I was there management wasn't the best- but it's my impression that the new center manager was my chief pilot at the time. She's a great boss to have and I'm sure she's an excellent center manager. That said, they expect you to stay within the syllabus and not over-charge (briefing time). I've seen that become a problem for some instructors with weak students. I never really had an issue with it personally, but I know that several instructors lost students or were given different students if briefing time was found to be an issue. It's simply a matter of documentation in my opinion. Don't cover up the weakness of the student by briefing the allotted 1.0 every lesson and then right before the check ride start doing 4 hour sessions trying to get the student to SAT level. There is no paper trail there, which will earn you some heat from the chiefs. If the student is weak and needs more time, document it, get the assistant chiefs notified early so you can coordinate during their training to get them to SAT level.
Also- it's my impression that the vast majority of students are foreign. Just be prepared to have your patience tested regarding language barriers.
Regarding housing, I lived on campus as a student, off campus as an instructor. I paid about 400-450/month for a one bedroom with a roommate (800-900 total/month). My favorite place was on the barrier island very near the beach and it was still only 450/month. Very affordable area to live, you shouldn't have a problem finding roommates or apartments that are affordable.
If any of that actually makes sense, fantastic. Feel free to PM me for clarification.