Can be quite a fun adventure if run properly. Luckily you don't need to spend forever planning out maps because there are lots of visual descriptions that will help with theatre of the mind.
I enjoy the way the setting moves out from Elventree and into the Wilderness, some subtle ways to roleplay throughout and some tight encounters to test those meddling adventurers with themed encounters from the Underdark. Not the most favoured of loot, but if you enjoy roleplaying then you could run this several times with different groups and find completely different outcomes.
[4 of 5 Stars!]