So why did Boimler's between-the-holodecks room have the (embarrassing) events of both adjacent holodecks reverberating through it? One of the core capabilities of a holodeck is the ability to manipulate where sounds appear to be coming from, which must include the ability to dampen sounds enormously. And if that technology exists, it should likely be available for ordinary walls between quarters too.
Is this just another case of Boimler not realizing that basic niceties (like viewscreen light filters) exist? And did both Freeman and T'Ana disable the audio dampening of their own holodecks?
It could just be that the holodeck noise dampening isn't working today, and sleep deprived Boimler doesn't think to just call engineering to go fix it?