This is how you need to proceed in order to get yourself a quarter where you will sleep.
You create a topic in the "Dormitories" section, titled (let's take me for example) : Alex's Quarters.
You can do whatever you wish to do in you quarters. It is your quarters. Sexuality is included if ever you, need to do it.
And of course, people can come and visit you in there.
Thank you.
On this,
have a good evening.