Inside the hotel, it seemed identical to any nice hotel you'd see in New York, Dallas or LA... except for the big sign next to the faucet in the bathroom.
WARNING - Do Not Drink
So using bottled water to brush you teeth rather than the 'public' does indicate a slight break in the "facade".
Not drinking tap water is common in Taiwan as well, and perhaps in some other south Asian countries—hotels commonly provide bottled water.
As it stands now, my family and I will be in Beijing and Shanghai next summer. Looking forward to it!