just was there and searching for "luggage lockers" (Internet pointed out that they exist and found them in reality and well signposted inside the airport building. 

Now wanted to add them to the building (as POIs), but I'm now struggling because I'm missing the right (building).level [needs to be -1]. It's the same the train stops in front of the airport building are correctly "painted" and found only "layer" at the building, but no leveling.
