not good for living. many floors, once you are a bit older, you must use escalators almost all the time. another thing is the toilet and other crap, where it will go, it will be stored all the time somewhere near your head, maybe in the rock, but still, not the best way to have shit stored. and not talking about water, dont think the house will have pipes to it so you have to store it somewhere, and, take care of it, so no hot tub and so ... there are better places, thats why the house is only idea
but thanks for the share