In the first episode, which reran on Starz last week, Louise said the apartment had three bedrooms and four bathrooms. Mystery solved!

Incidentally, George once mentioned 6 bathrooms.

Yeah, you know what? Looking at some episodes again on youtube (some are there uncut) it seems there were 3 bedrooms. You have George and Louise's, Lionel's, and Florence's. When Lionel no longer lived there because he got married, some other people used his room, like Florence's mother and Raymond.

I thought it was 3 bedrooms as well because it seemed as if whenever Florence went to her room (to change, turn in for the night) she went towards the back and Lionel's room was the door on the right from the living room.

Funny you should say that, because in the episode that aired this week, Mr. Bentley returned to NYC and had to stay at the Jefferson's apartment, and Louise said it was no problem, that he could stay in Lionel's old room. So it must have been a 3 bedroom apartment.

No, I think there were two bedrooms. When Florence moved in to be a full time housekeeper, it was mentioned in that episode that Lionel no longer lived at home because he was married to Jenny, so now Florence had Lionel's old room.

Bentley's door and the elevator door should've been reversed. It made no sense for his door to be where it was in proportion to the Jeffersons' apartment.
Al - Alicia
An - Andrew
Jo - Joseph
Be - Benjamin

I'm guessing that there's 4 bedrooms: George and Weezy's, Florence's, Lionel's room and the room that Mother Jefferson took her naps in. If not 4 there's at least 3 bedrooms. My thing is, where does Bentley's apartment fit into all this? Seems like there'd be a longer hallway to get to his door.