Some of the investigation/exploration portions seemed to drag on, but I've only played this module once so it may have more been an issue with that party/DM. There's a good mix that with combat, and a general continuation of the DRW storyline, so overall it was still fun module.

The climax scene is one of my favorite 5e fights to day. The architecture, the timing, the opportunities to leverage lesser used abilities and forcing people out of the "run to melee and spend 3 rounds attacking" mentality. Absolutely love how dynamic and interactive it is. Every time I've run it someone has done something cool and someone else has lamented not having a piece of utility that would have helped. Glorious!