Hi rmcy. We have a dedicated Germany forum in the Travel&Dining Section. I asked a moderator to move your thread there so more people will read it and you get a higher chance of a reply.

Also you want to look in the Germany forum and search a little bit.

In general the Old Town in Düsseldorf has a lot of pubs, bars and restaurants. You might want to try on of the traditional Altbier-Kneipen. An alternative are the Asian and Japanese restaurants in Düsseldorf which are pretty good since Düsseldorf has one of the largest Japanese populations in Europe.