Our bicycle trip from Passau to Vienna was absolutely wonderful. BikeTours performed flawlessly for which we were very thankful.
We purchased the "Upscale Lodging" which was well worth the money. Some of our hotels were stunning chateaus, others ultra-modern glass edifices, but all were very nice and located in desireable locations.
The bikes are big and heavy but ride comfortably and smoothly.
Some advice to first-timers.
1. The bikes are very big. If you are not at least 5'8" you should probably consider getting the women's bike as the cross bar on the men's bike is unusually high compared to the typical American bike.
2. Bring a little pen light to help you find the bathroom at night without waking your partner. Staying in a different hotel each night can be a little disorienting, especially at 3 AM.
3. Bring good rain gear, gloves, and a layer of warm clothing. Our last day's ride into Vienna was cold and rainy and we were all freezing by the time we reached our hotel.
4. European hotels do not typically provide sheets. Instead, you get a single plush and very warm comforter. However, if the hotel room is warm it is hard to get the covers situated so you are not too warm or too cool. I would recommend packing a small sheet--or better yet a sleeping sack--to provide that "just right" sleeping temperature.
5. BikeTours will provide you a packet of maps and directions for your trip. Study them thoroughly before each day's ride to avoid making wrong turns, especially in the bigger towns or cities. (We made some wrong turns in Vienna.)
6. You will not have access to washers and dryers. To wash your underwear and socks bring a two gallon plastic storage bag and some liquid laundry detergents. (I used Woolite.) At your hotel fill the bag with water, detergent, and your dirty laundry. Agitate, soak, agitate, soak, agitate, soak, rinse, and then hang dry. If something is still wet in the morning affix it to your bike rack and let the wind and the sun dry it while you ride. It works perfectly.
7. Be gracious. Germans and Austrians are kind, friendly people. Compliment the many things they do well, they will be very appreciative.
8. Be excited, because you'll love the trip.