Noted, but you should laready be able to hangout with most of the main characters in the hot spring already. Click on them while they're standing in the lobby.
Can I throw out a few suggestions that are sort of related :
1)Relax in the upgraded gardens (with maybe some nookie/exhibitionism)
2)small passive income from garden, Lin mentions growing things, could plant some flowers/fruit/veg to make the hotel self-sufficent, maybe even link that into selling excess at a farmers market or such... which could lead to seeing how other elves get treated by their owners (because we only really see a small amount of everyday life outside of the hotel)
3)something to drain money besides upgrades (which usually lead to more money) and outfits/toys. Hotels have operation costs too, and while I know Ellen handles the admin, would be nice to have a more active role as a manager, even if it is just getting weekly/monthly reports from Ellen about how well the hotel is running.
I know these are small things to ask for, but are huge projects in terms of amount of work/coding, but I think these would just enhance the game and its world.