I thought they had done away with the term "junior suites" a few years ago and replaced it with "deluxe". Maybe they're bringing it back though

. Anyway, the Yacht Club offers two of them, rooms #3201 and 4201. They come with 2 queen beds in the bedroom, then a french door which separates the daybed in the "living room". The club level is up on the 5th floor, so you would need to take the elevator and then walk down the hallway to the lounge.
PS. You can check out this link,
http://www.disneyzone.net/ycresort.htm for floorplans and location of the deluxe rooms.