It WAS the beta right up until this page/OP was updated with the v0.18 release. I know because my bookmark and game folder say Harem_Hotel-v0.18-BETA-3-pc.
I wanted the 0,17.2 release so I play using Lain's escellent WT Mod.
I would not plan on getting used to it existing.
Lain has disappeared months at a time, more than once, and the guy who worked on it the last time that Lain poofed has passed away.
Lains mod is more complex than most mods, and it takes more than someone with average skills to work on it.
If Lain does not return, the mod might be history.
Others have tried, but all they did was make a lot of people crash...