Here's an old favorite from Malvina Reynolds on the theme of hospitality:

Words and music by Malvina Reynolds
© 1966 by Schroder Music Co.
From Muse of Parker Street

THIS HOUSE IS YOUR HOUSE


This house is your house;
You can do what you want here;
You can sleep, you can eat,
You can talk or retreat;
You can sing, you can laugh,
And you don't have to ask;
This house is your house.

This house is your house;
You can do what you want here;
You can sprawl in a chair,
Run your hand through my hair,
Read a book, come or go,
Ask me things I don't know;
This house is your house.

This house is your house;
You can do what you want here;
It is cozy and good
And the hod's full of wood;
When you're ready to leave
I will bid you godspeed,
And you know where I keep the key;
This house is your house.

Warm regards,
Landlady's Daughter