According to research this used to be Days Inn Main-gate West, and was also (I heard)used as housing for Splendid China *closed/abandoned* employees (who came from china to work there, you can see a bridge linking Splendid China to the hotel in the back) . However it is now closed but seems to be a base for Splendid China security and since Splendid China has a $500 fine for trespassing, I'm sure this does too.
Going on internet archive site here is some information I got about the hotel from Splendid China's webpage
Splendid China Lodging
Splendid China is right at your door when you stay at Maingate West Days Inn
333 spacious guest rooms
Free scheduled transportation to WALT DISNEY WORLD® Resort
Refrigerator and safe in all rooms
Kids 12 and under EAT FREE*
Restaurant on premises
Video game room
TV with HBO, ESPN, CNN
Oversized swimming pool
2.5 miles from WALT DISNEY WORLD® Resort
3 miles to Water Mania Park®
12 miles to Universal Studios®
8 miles to Sea World®
Splendid China offers on-site meeting facilities for up to 300 people.
Our nearby Days Inn offers three meeting rooms and a boardroom to accommodate up to 100 people.