Question 1

Where is Welcia?

Accepted Answer

Welcia is in Shinjuku, Tokyo, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Hanasaku Iroha does Welcia appear in?

Accepted Answer

Welcia appears in EP12 of Hanasaku Iroha.

Question 3

Can I visit Welcia?

Accepted Answer

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

Question 4

Where was Hanasaku Iroha filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Welcia is one of those real places (EP12).