Baden-Baden is a very nice location for MFI 2016 (MFI 2001 was already held there) and turned out to be more affordable in terms of venue than Heidelberg.
Kongressaal II = 200 persons
Seminar room 10 = 50 persons
Seminar room 7 = 50 persons
See also http://www.kongresshaus.de/seiten/raum/raum-en.htm
