Upvote:4
If I remember correctly, there is no direct way to the top, you have to change at the 2nd floor.
http://www.toureiffel.paris/en/what-to-see-on-the-eiffel-tower/going-up
"...Three lifts (North, East, and West pillars ) will take you up to the 1st and 2nd floors (115m). If you want to go to the top (276m), you need to change lifts at the 2nd floor..."
If you decide to walk up, remember that there are 700+ steps; might be better to take the elevator up and walk down.
In any case, the Tower is always crowded, but you can beat the crowd by reserving your tickets as early as possible (opens at 09:30)
The best way to get information is to use the Eiffel tower web site: