OOC:
@Drgwen in your last post it seems you're looking for a second opinion. But your roll is high enough to realize the door is not trapped. Since you said "If she sees nothing suggesting it is unsafe, she tries to open it" previously, I'm going to assume you open it ;)
With a calculated risk, Jotna tries to open the door but finds out it's locked. She rattles it to no avail. The heavy oak is tough as nails.
However, shortly after you hear a few clicks and the door swivels open slowly. A lightly perfumed breeze comes through, reminding you of flowers in spring time. As the door opens, you see a nicely decorated entrance hall of a mansion. Vases with flowers on top of antique tables, intricate rugs, great chandeliers, paintings and all kinds of things you'd expect to see in a mansion like this are visible in the well lit room.

Butler
A man in a dark suit, who just opened the door, stands before you. He's got a slim tall figure and an oval face. He is neatly trimmed and well looked after.
"Ah, welcome in, sirs and madams." He says as he gestures you to enter.
Those who do, can see the room has a high ceiling with tall windows which allow sunlight in. Which is strange for two reasons. One; You're pretty sure you're underground. Two; There hasn't been a sun like this for a while now. Another thing strikes you as odd. On the left wall as you come in, a large staircase leads up to a second floor. Yet there is no second floor. The stairs simply run into the ceiling and stop there as if they forgot to put in a second floor but decided to build the stairs anyway for no reason.
"Please take off your shoes. Lady Malista doesn't like dirty prints all over the place." He offers you some clean slippers instead.
What does everyone do?