That Astron also has a free airport shuttle and regular service. Just make sure you ask before you get on because there is another Astron with a shuttle as well. Their breakfast is very good, even by hearty German standards, and the rooms are functional and comfortable.

We enjoyed the Steigenberger Max once - it is more luxurious, farther from the airport and has a shuttle as well - but the Astron is our airport hotel of choice.

I just checked their website and the link to the airport hotel seemed to be down, but we have gotten good deals through the site. We have stayed there three times in the last year or so and have never been disappointed.