I'm going to say that the walls and ceilings are actually finished! It's a typical industrial loft look that makes sense for a bare bones brand and if you look at the lobby pics there are also unfinished ceilings. (this is also often the case in aloft hotels which kind of follow the same design concept) Another thought.....did your room happen to be on the top floor? If so, rooms on the top floor often have ceilings left exposed while on the lower floors they are not.

Was there a shuttle to the airport provided?

Maybe it would be a good idea for the Mods to separate the review into a new thread specifically for the new Kelsterbach property.