Better as an expansion the the frozen duplo castle
"As other reviewers have said, this is a very simple design. I think it’s a great expansion to the full duplo frozen castle, but I probably wouldn’t buy this as the only lego set for a first time duplo builder. My 4 year old is new to following lego instructions, so this was a great introductory build for her attention span. If your kids are a bit more comfortable with sitting through the directions, and you want something that is a bit more involved, I’d get the larger castle.
I would love to see a small set like this for duplo that feature Sven and Christof and their carriage as I think it would complete the world a bit more in tandem with the castle and the tea party set!"