The 11-second viral video simply shows 29-year-old Gaga's silver-painted hand ringing a courtesy bell in the hotel's lobby, reported Entertainment Weekly.
Producer Ryan Murphy has already hinted that Gaga's appearance in "American Horror Story: Hotel will not be musical in nature.
"People, keep saying to me, 'What numbers are they singing, what numbers are they singing?' and I say, 'There will be no numbers'," he recently said.
This will be the pop star's first-ever continuing role in a television drama series.
Joining Lady Gaga in Hotel will be Sarah Paulson, Angela Bassett, Max Greenfield, Kathy Bates and Emma Roberts, among others.
"American Horror Story: Hotel" is set to premiere this October on FX in the US.