I did a rotation there in december. I can speak to a few of your questions.
1. For me my rotation was 5 weeks, 2 weeks of pediatric ED (lots of fun, get to do some history taking, and observe some fun stuff), 1 week of NICU (very boring, nothing to do for students), 1 week of pediatric in patient (also very boring, any serious cases get sent to Kings county, so nothing much to do. Plus so few patients sometimes that they close the floor, and make it an adult floor), and 1 week of peds clinic (lots of patients, and also very fun). Everyday there is noon conference. Residents are kind sometimes and try and teach, attendings not so much. However, some of this stuff may have changes since I went, i heard somewhere that it might have.
2. Rent - i dont know, I live in the area
3. Parking - there is a parking lot in the hospital, but it isnt free, and it is so packed that if you get released early you wont be able to leave until the late afternoon cause your car will be blocked in. Look for street parking, its a pain in the ass, and give yourself like 20 minutes of just parking struggle time.
Have fun