I've always loved this series and it's been the most run campaign for me in the last 30 years. Along with Ravenloft, Mordenkanen's Wonderous Adventure, and White Plume Mountain series, it's a must-play module.
The conversion on this is amazing. Detailed where it needs to be yet simple in it's organization. It's obvious a lot of care was taken in the conversion. The author even shows goes so far as to show you exactly where the region is in the forgotten realms. Very well done, thumbs up!