What is the addition at the lower level of the Space needle? Is it another restaurant? I don't see anything on the website referring to this

Its the glass floor. The top level has a cafe with doors to the outside viewing area

Yes, restaurant gone. Glass floor to remind you how high you are. The elevator guide said it was originally a temporary change. However he anticipates the restaurant not coming back. The absence of an elevator allows more people on the viewing decks.

Oh no! The Space Needle needs the restaurant. Don't take it away.