Welcome to FlyerTalk!

I believe your question may be better suited for the Germany forum. I went over there and searched for thread titles containing "Frankfurt" and came up with these threads:

http://www.flyertalk.com/forum/germa...frankfurt.html
http://www.flyertalk.com/forum/germa...urt-mainz.html
http://www.flyertalk.com/forum/germa...frankfurt.html
http://www.flyertalk.com/forum/germa...eidelberg.html

Enjoy your stay in Frankfurt!