The house in Willow Creek has easy access to a river with angelfish, as well as Snapdragons, Lillies and Apples growing nearby - the only Ambrosia ingredient you don't have easy access to is Cherries.
This differs to Oasis Springs, which has Cherries (and maybe Apples, but I'd have to double check - they're easy to get from seed packets, though, anyways) and not much else, and it certainly requires travelling to get fishing done (at least until access to the Forgotten Grotto is obtained).
Strategically, you're much better off starting in Willow Creek.
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I feel that the tips about "do such-and-such aspiration early" aren't entirely useful because of just how many there are that you're going to want to get done early. The Deviance, Popularity, Serial Romantic and Big Happy Family requirements are all going to be tricky later in the game, but then again, maxing certain careers unrelated to those aspirations could also be tricky without friends.