@Constanza ( Connie ), that seems an extreme view. If a guest wants absolute privacy, he has to book a whole flat. Or better still, a house. In a densely populated city, you will always risk to hear some neighbors.
Respect is evidently needed, but on both sides. If you book a room in an apartment, you can't expect that the host will put his life on hold and tiptoe around in his own home.
If they book a shared space, most guests want the company. My last two guests were actually disappointed when I spent the night outside 😉 I had tought it an upgrade to let them use the wole apartment, but no, they came also for the company. Or at least a presence, even whilst skyping with the girlfriend...
Sometimes I have friends or neighbors in the atelier or in the garden and most guests are happy to be invited to share a chat and eat a meal in company.
You can't exclude that you'll get a guest who wants absolute privacy, that's a pity then - for them. I would not feel guilty about laughing in my apartment. I'd even say, when you reach a point that you think it is normal to efface yourself totally for strangers who want to stay somewhere cheaper then in a hotel room, but don't approve of you, then you have a big problem. It's a very short way to burnout.