I'm not sure if I'm posting this in the correct place since my problem is not exactly the same, but I will leave this here as it pertains to woohoo and beds.
All the sims in my house will not Woohoo in any bed on the second floor. I have reset every bed, every Sim, moved things, removed other furniture, nothing works. The will not do the interactions through chat commands or by clicking on the bed. The wont even sit together on the bed either. But all sims go to sleep in there respective beds and I haven't had any issues with waking other sims. Although, I don't know why all sims seem to default to Nap instead of Sleep when auto fulfilled to satisfy energy.