This sounds like a Chris Morris sketch.
Well it’s really hard to know then. Because perhaps when they built the hotel they have a few load bearing walls made out of concrete, and some might happen to be about the size of a standard room, or they separate with brick or masonry walls. They are sometimes preferred because they have better soundproofing than say drywall. So you will need to call and ask each individual hotel you plan on staying, and you may need to talk to their manager because it is unlikely the front desk clerk will know.
But if there is any medical condition that makes concrete walls bad, I don’t see how drywall will improve things. Does it have to do with intolerance to cold? Drywall has better insulation properties for cold/heat…
Yes, that was me.
I’d like to add that the smaller the rooms, the larger the chance that you’ll have drywall-like interior walls, due to overall weight issues of the building especially in seismically active areas like Taiwan.
But to be frank, no one builds large concrete-only hotels. That would make it much harder to install power sockets, light switches, phone cables, LAN cables and water pipes. At most every 4th separation between rooms would be a concrete wall.
Actually, ALC can be used as well, as ALC is very light, provides very good insulation (both heat and sound), and is easy to install electrical or plumbing as they can be worked with woodworking tools.
Some older buildings and hotels have these wooden pannels attached to the wall and sometimes the roof that sometimes even include these cushion-like panels, along with plenty of wooden-like materials.
It’s a kinda old-fashion style of building, with all this furniture fixed stuck to the wall, I guess for soundproofing.
I think it’s not so common anymore because they are an amazing fire hazard 
If you are looking to punch a wall and make a hole, I don’t think Taiwan’s buildings are the place.
But if you have to hit the wall and don’t want to hurt yourself badly then yeah, there are some places with these kind of walls, and I’ve lived in hotels like that here in Taiwan.
Your best bet if you dont want to say why, is call each hotel and ask them your specific questions. Without a reason its hard to gelp and give other suggestions that would be suitable. Especially if outer walls are ok to be concrete but not the inner. I think many of us are stumped, and only hotel management can help you. Expect concerns from them though as there are problems with perverts and cameras, so be aware…
I mean another thing drywall is good for is hiding stuff inside…
A legitimate health condition that requires no concrete walls separating rooms, but concrete on the other walls is fine? Do you need the person in the adjoining room to pass your medication to you or something? This is all very curious.
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Can only imagine the look on the Taiwanese worker’s face there
蛤？
But if there is one place in the world you don’t need to hide anything, it’s a quarantine hotel! Nobody else is going to be entering the room. This seems to have more to do with wanting some sort of access or communication between rooms.
I never said a “health condition”; I said a "health concern ". And of course non-concrete outer walls in addition to inner walls would be even better, but I know that non-concrete outer walls would be impossible to find, hence I’m willing to accept concrete outer walls.
You’re getting into an impressive level of semantic hair-splitting considering how vague you’re being about what you’re actually referring to.
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This is great. Keep it going.
Do you think “quarantinee” might have been a better user name?
My guess is this person has a psychological condition/mental illness/whatever the proper term is. Probably we should just let it go and the OP you need to call around the different hotels and ask them directly about their inner wall construction materials. It is a weird request which will raise serious concerns (drugs, spying/porn etc), so be aware of that. But its impossible for people to try and help without knowing your issue. And fairly, your issues arent anyones business. Probably best to just say good luck, and you may just be happy with any advice given that is useful 
going further probably will just end up causing more ridicule and perhaps more psychological damage.
Just my opinion. Possible everyone is now an accessory to a future pedo bust… Might be good to just let it be, for everyone.
If concrete buildings are an issue for someone, for whatever reason, I would suggest that Taiwan is not the place for them.
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I would suggest staying away from tall buildings altogether. As reinforced concrete is the only thing strong enough to build anything more than 4 stories tall.
Given the replies given so far, I would suggest that @quarantiner consider deferring his/her (or if he/she is “asking for a friend”) trip to Taiwan until such time as Quarantine is no longer required.
And, once the need to Quarantine is no longer required, what kind of building would the person intend to reside in?
No point in ringing the Hotels asking for construction details, most are in fact tenants and wouldn’t have a clue apart from what they can see.
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No semantic hairsplitting at all; as I said from the very beginning it’s a “totally legitimate health reason” – later also mentioned a “health concern” – something which affects everyone stuck in a room for that long duration of a time. Totally different from an individual health/medical condition.
As was mentioned by someone above, many tall buildings don’t use reinforced concrete for most of their inner walls because it would make the building too heavy and expensive to build.