I've spent a few hours on nh, ex, and my browser history but am coming up short.

I remember it is about a guy who lives at/moves to an apartment, which has a kind of secret with fucking the housewives/milfs there. I remember the room numbers being important, but can't remember why.

It is kinda similar Fuckhouse Sexclusive Apartments.

Thank you in advance!

Edit: scoured h2r with the housewife tag and didn't find it. I hope I didn't miss it, as it may be a multi work series in the middle of it. And I doubt this helps but I remember the apartment being a one of those multi-story ones that are taller. I think the first MILF he encountered had to test him out or something before making him part of the group.