A Logic Puzzle

Eric, Chris, Jeff and Sung-woo share an apartment with two bedrooms. Chris and Jeff are sound sleepers; Eric and Sung-woo are light sleepers. Eric, Chris, and Jeff snore. Chris snores louder than Eric, and Jeff snores louder than Eric and Chris. Jeff and Sung-woo go to work early. Sung-woo is sick and really just wants to get one good night's sleep. Chris has constructed an elaborate sound barrier between Sung-woo and Eric, to no avail. Jeff has spent most of the discussion laughing hysterically.

Where should each roommate sleep, what time should they go to bed and wake up, and how many nights of experimental sleeping arrangements will it take before everyone decides to make Jeff sleep outside?