This is what I want from a two hour module. A simple scenario that is fun to play out. It tok us three hours, but I did allow the players to spend a lot of time investigating in the early parts of the module.
There is enough plot to get the characters to role play and make choices, but not so much that they lose focus. The combats are good and have variety.
I was running it for only three characters, so I needed to take it easy on them, but it still worked well.
I do think the provided map of the keep was not useful, though it was easy to improvise around that.
The second encounter needed a little tweaking, but would still have worked as written so long as nobody was paying too much attention.
[5 of 5 Stars!]