Anduin would have noticed how similar the house was to his own in terms of what layout he could see, suggesting that some houses had a cookie cutter build. It's just difficult to focus on such instant reactions when the temperature in the house is extraordinarily high. Anduin is familiar with how these houses are kept warm and he really knows he shouldn't be surprised by this and instead he opts to quietly suffer through it.

"The coffee also lacks." It could be part of the torture this place has in mind, to kill them slowly with mundane food and beverages. Such a plot would not surprise the human in the slightest and he takes another look around. He wants to see if there are pictures of Wrathion growing up with his "family" or not, just like Anduin has in his own (colder) house.

"Do you believe these places to be safe to talk?"