We're back and can happily report that it is a wonderful place for holiday makers whether cyclists or not.
We stayed at Steinach in Kinzigtal in the heart of the Black Forest. We booked with Canvas Holidays who also were able to get us a deal on the ferry crossings via Hull to Rotterdam. The tents were large and very well equipped, but we stayed in a large 4 sleeper static caravan, which had lots of room. The only downside was cupboard space. In the Black Forest all the villages and towns have municipal pool complexes, and as tourists we had paid Tourist Tax (included in the price) which gave us access to all the Freibad (outdoor pools in the Black Forest region). The food was excellent if you like German pork products and the scenery was outstanding. We visited a local Bear rescue centre and also the local RodelBahn, which is amazing!! and great value!
I did not know that Germany is as well appointed for cycle paths as The Netherlands, and we made good use of the cycle paths between local towns to visit then. The costs were on a par with the UK, so not overly expensive, like Denmark or Switzerland, I have heard about.
Dave C