https://www.ebay.com/itm/AUSTIN-TX-I...-/221512799077
^That's a postcard of the 400 Motel that shows up in that 1969 photo above. If you look, you can see the white house that sits just north of the driveway at the City View Apartments on South Congress.
I took this photo back in March before the demolition started on the apartments along Congress. You can see the white house here.