Drywall is used here, but for some reason it is not often used, instead those 1/8" thick plywood panels are used for wall dividers. I don’t understand the reasoning because drywall is actually a lot cheaper than those 1/8" thick plywood pieces. I suspect the reason is due to the amount of work required for finishing drywall that makes tradesmen not want to use them. Because you must install drywall with screws, not just nail it on with those brad nailers. Then you must carefully plaster over the joints with the proper compound and the drywall tape, finally finishing them with wider and wider compound, and paint or texture them. It makes for a very good looking wall but it’s a lot of work.
Whereas plywood wall just nails on and is ready to go within 12 hours. But not only is the material more expensive it does NOT pass fire inspections because it has zero fire rating (drywall has some fire resistance to it).
Cheap Taiwanese chabuduo for you… But better hotels should not have this problem.
To put into perspective drywall sheet is about 250nt or so a sheet for a 4x8 sheet. 1/8" thick plywood panel with the more attractive wood grain look to it is about 600nt a sheet. I suspect most tradesmen knows how to fit drywall and stuff but will charge much more due to the labor required. Not to mention Drywall sheet weights a LOT, plywood panels not so much! Thus drywall actually has decent soundproofing. Not as good as brick or reinforced concrete but it’s decent. Plywood has zero soundproofing.