So, I was curious as to what would be going in there, and all I can gather is... nothing. Talk about an expensive parking lot.
First of all, it sold for a cool $4,350,000 earlier this year to a company called "Ben's Ice Cream." My first thought was a Ben & Jerry's, but alas my first thought was wrong. Looking up the company name on the CA business search website, I find that Ben's Ice Cream is a brand new LLC formed for the sole purpose, according to the documentation provided to the state, to "hold deed to real property." This did give me their CA company address, which is 888 S DISNEYLAND DR #340. This leads to a property management company (Wincome hospitality), who's list of properties just so happens to include the Westin.
So it all seems to circle around that The Westin bought the site and is paving over it for an expanded parking lot.
Or it's a big coincidence that the property management company who happens to manage the westin bought the land through a non operating LLC.