I've seen this title noted with different demographic status. From shoujo in here to seinen and josei on other sites. What's the right one?

By Publication specifications it is a Seinen, if you look at the concept of the Publication it's a Seinen version of Feel Young with an emphasis of romance manga. I'm not surprised at the confusion though, it probably has a lot of mangaka who are female and probably has a good amount of female readers. But I would vouch for Seinen.

https://ja.wikipedia.org/wiki/%E6%A5%BD%E5%9C%92_Le_Paradis