Guten Tag Till!
I like it, especially the navigation - unlike many sites, it is clearly legible and the little "-" in front helps a lot to differentiate the menu items.
I don't think the graphic along the top fits well though - just seems out of balance with the rest of the page. Perhaps another photo under the left-hand menu would balance it?
Presents a conservative and regimented image - if that's what the client wants, then you're good to go
