De Amstel Taveerne (Amstel 54)
(Listing updated 6 months ago.)
Although it, too, has a very mixed crowd. In the evening, you'll find lots of straight/gay/lesbian Dutch (all kinds of people from 20 to 80), singing, joining arms and swaying to wonderful Dutch "liedjes" (songs). It's a blast!
(This listing was originally from http://graygay.com/.)