Question 1

Where is Merry-Go-Round?

Accepted Answer

Merry-Go-Round is in Yokohama, Kanagawa Prefecture, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Slow Loop does Merry-Go-Round appear in?

Accepted Answer

Merry-Go-Round appears in EP7 of Slow Loop.

Question 3

Can I visit Merry-Go-Round?

Accepted Answer

Yes. Merry-Go-Round is a real place you can visit. Check what it looks like on Street View before you go.

Question 4

Where was Slow Loop filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Merry-Go-Round is one of those real places (EP7).