The Lindner DUS airport is now a decent hotel in its price range upon completion of its renovation. If they renovate all Lindners like that, I'll revise the opinion I voiced further up in this thread.

For now, I mostly avoid the Lindners. They're dated. Hate their bedding (pillows waaay too soft, comforters too thick). And their weak AC. The me and all, on the other hand, are all good to great.