What hotel employee? Another cameo is one dude who makes Axel flee the scene after punching Robert and intimidating Lena.
One does not exclude the other. High-level Lust homewrecker Lena feels kinda slutty already. She can already have a kink for MFM threesome, which would no doubt lead to DP at some point and even gangbang if she finds enough guys willing to treat her like a queen/dirty whore and not feel jealous about other guys being present. The game has plenty of opportunities for different playstyles, and Lena's "relationships" who are not Ian, Holly, or Louise imply that they're there to encourage Lena to take on an active slut role that isn't focused on relationships too much because all of them are casual and aren't deep enough to make you care for Robert, Mike or Seymour. Even Ivy constantly encourages Lena to enjoy her freedom by sleeping around and not bother with serious relationships.