[Markus Ramikin]

I'm playing a mercenary/thief.

In the corridor above the room where Garond sits, every single time I try to open the second door inside of Gomez's room, or the door furthest to the right in the corridor, I get spotted. The guard outside the rooms doesn't spot me, but the paladins in the room below do, somehow. Through the floor.

Is there a way to prevent that? Is there any way to get into those rooms at all for a merc?

[Dvorak]

This may sound weird but are you sneaking?

I had the same issue, when I was walking normally they would spot me through the floor but with sneaking I could get in there.

[Markus Ramikin]

Naturally, I'm sneaking.

I think the sneaking-state turns off while I'm opening a door, though. That's when I get detected.

[shaboo]

This is how it worked for me: Enter one of the rooms and wait for a guard to spot you and to come running. Do like he says and leave the room. While the guard is returning to his original position(!), open another door. Not always, but often, this door can be opened and the room entered without any problems. (It's important to open the second door before the guard reaches its original position.) Always leave rooms sneaking.