It seems as if almost nobody is here it is so quiet but inside the planes we're told teams of workmen are beavering away (as well as robots).I can vividly imagine a reporter speaking those exact words into a portable recorder. I'm sure that the phrase makes sense during playback, because of contextual inflection, but the transcription is extremely difficult to read. Inflection can't be written without looking *stupid*. Your writing should avoid depending on something that isn't there.
The reporter and editor(s) also treated us to a run-on sentence.
I would write the above quote like this:
It is so quiet that it seems as if almost nobody is here. The tour guide tells us, however, that teams of workmen and robots are beavering away inside the planes.