no there shouldn't be another requirement but I may be missing something... I'm gonna look for my save when I was building the GloryHole and see if I'm missing something.
edit: nah I was right no extra requirements, you just gotta go there at 20:00 for the time.
also kinda funny thing about it is when I went with Ste to the gloryhole at night for the first time it didn't take my characters virginity. I know this because I checked the extra requirement on my virgin for Logan save. also you don't need 2 hearts to get the sex scene with Logan, need to correct another comment I made saying you could get locked out if you don't get the second heart...