I have a refundable reservation for one night in April at the Candlewood Suites. They are at 1733 South Anaheim Boulevard,
Anaheim, CA 92805, which puts them near the Motel 6 and in this area you describe. I'm staying one night there before I switch to the Grand Californian. My plan is to have breakfast, although I don't think the hotel has anything except grab-and-go, and then take a Lyft over to the GC.
After seeing this, I'm considering paying more to stay in one of my usual locations on Harbor - Candy Cane, Park Place, or Park Vue, although those cost more and I am not going to the park from there. Alternatively, I might try Stovall's; I think I could probably walk up Disneyland Drive with my luggage the morning I switch.
If you are a solo female, I would definitely not stay there. Switch to literally any hotel on Harbor.

