Set design at Enchambered is outstanding, and Whispering Halls is one of their best. Most of the interactions are tech, leading to an appropriate feeling of spookiness. Stepping into the second room was jawdropping - I wanted to just pause and take in everything -- and simply seeing one particular door had me thinking "this is clearly cursed, and I'm not sure I want to go in there".
There's a lot going on in this room - our group of 5 enthusiasts was constantly working on stuff. Space felt more of a constraint than content - the first room was a little cramped at 5, and there were later sequences that were smaller. This might pose a problem for less experienced groups.
There was usually more than one thing to work on, and keeping track of stuff was a little difficult (both due to our group size and because we spread out) - there were multiple times when one person would pick up something that had already been dealt with. That's partly on us - we should have organized better - but IMHO also partly due to the design of the room.
Puzzlewise, there were some slightly bumpy spots: I think one spot was underclued where we ended up needing a hint, there was a search fail because of ambiguity about what we were looking for, and the graphic design of one prop made us think it was supposed to be used in the wrong place.
Physically active
Not at all