one design element being elevators programmed to only permit guests to access the floors they have rooms booked on so that there's the appearance on individual lodging levels of fewer guests. a higher level room might also have access to a 'special' lounge for beverages/snacks so those guests don't frequently utililize the common areas that other guests access for the same-again providing the appearance of a less crowded experience.
they are still being built and they will cost more to stay at b/c some communities in popular destinations are pushing back at the cost/toll it takes on their infrastructure. my home town just enacted a 3 year implementation that will increase the cost of hotel construction fees 10x, increasing from $9 to $100 per square foot. this is in addition to further increasing the hotel occupancy tax which I believe is now at 15.3%. despite the cost the tourists continue to flood in.