I just bought this, as my campaign is taking my players to the eponymous Gate next and wanted some decent information. The Sword Coast Adventurer Guide is basic on Baldur's Gate, although useful, and older version content is out of date. Then I saw this and, combined with the credentials of the persons creating it, I clicked buy.
At first glance it looks professionally produced, colourful and easy to read, with a good collection of maps and handouts to support the story. Delving into the book I am seriously impressed by the quality of the work, from the layout, to the detail, to the artwork, which is so good, particularly around the characters and NPCs.
Echoing on of the other reviews on this title, I cannot wait to run this for my players. The story sounds good and exciting, although I might have to tweak as my characters are now 2nd level.
[5 of 5 Stars!]