Our group of 4 adults, one 9yo, finished in 43 minutes with one clue that we didn't ask for so we must have really been trailing of for the GM to suggest it. The room is loosely linear with a little flexibility for group members to find their own things at times, but I think a group of 4 is still ideal to get different ideas and perspectives on the solves. We loved the technical features, use of lights, and audio. Some puzzles had multiple steps. I wouldn't call them red herrings, but some clues can easily lead you the wrong way quickly and you have to think through them simply, but clearly.
Particularly interesting or different
Yes
Kids are more likely to get distracted and go in the wrong direction than some other puzzles I've been in. This one is really pretty and there is a lot to play with.
Physically active
Not at all
Accessibility
Not a space for wheelchairs, colorblindness could limit gameplay