Question 1

Where is Asaya Hotel?

Accepted Answer

Asaya Hotel is in Nikkō, Tochigi, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of The Future Diary does Asaya Hotel appear in?

Accepted Answer

Asaya Hotel appears in EP13 of The Future Diary.

Question 3

Can I visit Asaya Hotel?

Accepted Answer

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

Question 4

Where was The Future Diary filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Asaya Hotel is one of those real places (EP13).