"You're in a chamber" isn't helpful - "chamber" isn't a word most people would naturally use! If it's a corridor/cave/clearing/etc, that's a different matter to an extent, but how much does it matter? All the dungeoneer really needs to know immediately on entering a new area is (1) where to go, (2) where NOT to go [i.e., down a pit].
After that, if they don't require immediate movement [e.g., bomb room, corridor of blades], next comes who or what else is there that might be relevant, but what the area actually looks like to the advisors never really needs to come up except insofar as it relates to clues or dangers. You'd be as well saying "You're on a solid floor" or whatever and skipping rather than altering "room".
It isn't a question of being important for the purposes of the game.
It's perfectly possibly to forgo the description altogether. Considering that the dungeoneer is essentially blind, he/she needs to be steered around either by the advisers, a game character or the Eye Shield regardless of how much or little the dungeoneer is actually aware of. If there's a hazard in the room, he or she isn't required to know what it is or where it is, since it's the advisers task to guide him or her safely around it in any case, especially as plenty of things actually move around.
The reason why dungeoneers request a description of the room or location they are in is simple: because they want to be kept in the loop. While the three advisers are able to become fully immersed in the experience, the poor person in the helmet is usually relegated to puppet status. While some have still described the experience as thrilling and unique, it's difficult to envision the dungeoneer having quite the same enjoyment the advisors are getting because he or she is blind, and simply following instructions the whole time.
If you're in the helmet, it's easier to remain properly immersed in the whole experience if you're kept up to date on everything that's going on. That means proper and full descriptions from the advisors of where the dungeoneer actually is, and other little details of significance in the scene, that way you feel as if you're having an actual adventure.
