Haunting of Owlbear Lodge is a really enjoyable adventure. I enjoyed the art and while the story is relatively straightforward it is a satisfying mix of light horror and light hearted moments.
I ran this adventure for a group of 3 level 3 players with no adjustments to any of the creatures or save DCs, taking around 3 - 4 hours to complete. The layout of the product is clean and easy to follow and the roll20 maps were good quality and easy to import, reducing preparation time to a minimum.
There are a couple of gags here and there which my players liked and helped break up the tension from the constant threat of the spores. I found the spores mechanic to be simple yet very effective, having the players keep track of their failures with the included handout really put them on edge seeing exactly how close they were to succumbing while not being sure what would happen.
My only critsism(and this is nitpicking) would be that I had to remake one of the handouts because it included the word "Neverwinter" and I ran this in my own setting.
Overall a really fun adventure suitable for players and DMs of all experience levels.
[5 of 5 Stars!]