Yes, you're right The Greenhouse is on the Dutch side and their menu online shows prices in US$ and NAF. So, 1:1 with the EURO...
I think the OP was thrown off by the comment that ALL restaurants on the French side offer 1:1 which is not the case.
Don't like it when I see the 'stamp' or hand written regarding service on the receipt when we're on the French side. Feel like someone is trying to pull a fast one. JMHO.