I sympathize with you. I’m in Brussels, Belgium and I also have a hard time buying tours. I’ don’t speak the local languages, thus I need tours with English speaking guides. I also found AffordableTours.com very helpful. I recently bought from them a Globus tour to Italy and I was able to do it all by email. Best yet, I saved 10% over the cost of the tour. I totally recommend them. You can find them at:
www.AffordableTours.com
Patty Klein