Eurobricks
“This is really a great set. The minifigures are all superb and almost exclusive to this set. This is the only place to get the shark head, which I'm sure you could use in some interesting vignettes, and it's the only place to get the merman with his "punk red" hair. I... More suppose you could complain that LEGO didn't include Cho, Cedric, Fleur's sister, and even Fleur (who wasn't there), but LEGO was never going to put nine minifigures in a $20 set, and I think they made the right choices.”
Brickset
“Buy this set for its great parts and minifigures, not for playability. If you can somehow find this at any local shop, pick it up for a fair price. The set includes five exclusive minifigures; Harry Potter (double-sided head with normal expression and Gillyweed), Hermione... More Granger and Ron Weasley (both with double sided Sleeping/Awake heads), Viktor Krum (includes shark head, normal head, and hair), and the Merman.”
Full review at brickset.com
Brickipedia
“The main feature of the set is the archway where Hermione and Ron stand. A lever in the back launches them to safety. The set also includes stairs that, when the top stair is taken off, reveals two knives underneath.”
Full review at brickipedia.fandom.com