Two postcards I bought recently for Fantasy Motel, "Across The Street From Disneyland"! It was at 1734 Harbor Blvd., now home to the Castle Inn & Suites, which must have torn down the Fantasy and built new, because the Castle Inn looks like a castle.
The name "Fantasy Motel" must have just been a nod to Fantasyland, because nothing about the hotel seems very fantastic-- no trolls or dragons or wizards to be seen, just a pastel paint job. Still, it seems like a decent enough place to stay, and certainly close to Disneyland -- you can see the Disneyland sign just up the street in the first postcard!
Edit: Here are some more Fantasy Motel postcards I found online