Slightly OT (sorry), but this seems more efficient than starting an orphan thread.
I'll be in Paris (first time in many years) for two days next week for work. Entirely coincidentally, my brother will also be there for work at the same time. Scheduling works out such that we'll both be free Friday afternoon/evening. Recommendations on where to take him for dinner? Not especially concerned about price (the last time my bro and I hung out in Paris together was 1983, so I'm treating it as something of an occasion), but would prefer someplace not super formal or challenging.