Also been a few times and happily endorse MFAS' opinion. Great large sausages (and other delights) and excellent German beer on tap. It is on what is called Soi Goethe off the left side of Sathorn Soi 1 when you enter from Sathorn (i,e. other side from Babylon). Parking usually available when I've been there.

Heard a rumour that von Stauffenberg's grandson had been seen there - but then he was one of us!!!