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
Featuring:
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
Guest laundry
Video game room
TV with HBO, ESPN, CNN
Oversized swimming pool
Gift shop
Exercise room
NEARBY ATTRACTIONS
2.5 miles from WALT DISNEY WORLD® Resort
3 miles to Water Mania Park®
12 miles to Universal Studios®
8 miles to Sea World®
MEETING FACILITIES
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.

