As the title says, my girlfriend and I are going to Berlin for four days - from the 14th to 18th May. I'm going to check out some travel sites on the net for advice on things to do/see, but I am wondering if some of you guys here could maybe help out as well? We're tourists, so a lot of stuff will be more fascinating for us than for some of you, but if you could recommend a nice unknown restaurant or something, that would be great! Anything at all...