The House in the Cerulean Sea

Meh.

The best part of this one is the dialogue involving the kids. Very funny and well written.

The rest is entirely predictable and fairytale-ish. There's very little depth here. Standard morality tales. Hate is bad. Love is good. Boring.

There's one “big reveal”, but it is telegraphed quite early on and fairly easy to predict, so not very surprising. And the consequences of it are fairly minor.

As so many others have said, it's saccharine and obvious.

If you want a simple, gentle, mildly amusing read, this is that.