In this case, ‘local technique’ translates to something like ‘mechanical room’. But a local technique room, wouldn’t that be nice?
— hello, front desk?
— yes, monsieur?
— I’d like to fit in better, recreate something I saw in my travels, become more attractive to the ladies.
— ah, but of course, second door on the left, main floor past the restaurant, labeled Local Technique, they will take care of you.