Yeah, the set is totally interesting.
At first I wondered why they first have the names the right way and then later mirror-inverted, but it makes sense with the song - living la vida loca and turning inside out.
But that's why Kuu said they're shooting in a movable setting!
Guess they also didn't want to come up with some random names for places in a fantasy city set, so they simply took song names and thing's related to Kuu, also in hindsight of her coming 20th anniversary.