How about Spieka? It's a little grass strip right beside Nordholz and the bar/club is manned by the military ATC folk from there. They were extremely hospitable and friendly when I got stuck there a few years back.
Further south there is Breitscheid which has a great restaurant and hotel on site. Again, a lovely couple who own it and despite my very limited german they were great.
Coming to think of it, I've always had a good reception in germany!