Question 1

Where is Hotel Sanoya?

Accepted Answer

Hotel Sanoya is in Kyoto, Kyoto Prefecture, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Deaimon does Hotel Sanoya appear in?

Accepted Answer

Hotel Sanoya appears in EP1 of Deaimon.

Question 3

Can I visit Hotel Sanoya?

Accepted Answer

Yes. Hotel Sanoya is a real place you can visit. Check what it looks like on Street View before you go.

Question 4

Where was Deaimon filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Hotel Sanoya is one of those real places (EP1).