If you have a space (living, room, backyard, garage, barn, etc), and at least 20 people RSVP’ed, you can host. A host’s value comes in providing the setting and the people for the intimate live music experience. You create the environment, the lighting, the vibe. It’s your space, so as long as you are in keeping with the laws of your city for your space, you make it of what you want. The performer does the rest.
How you choose your lighting, seating, and environment will largely become what people will either love or not love about your space. Generally speaking, your place should be tidy and clean. If you choose to host in your living room and you have indoor cats, make sure you let people know that on the venue page you create.
You should have a clear idea of how many people can comfortably be seated. People don’t usually mind if it’s tight as long as 1)they are comfortable, 2)there is a pathway to get out quickly in case of emergency. On the venue page, be sure to say how many people your place seats. If it is a backyard, how many people can you comfortably seat?
You don’t need to provide food, but let’s face it. People like to eat. So, a couple of options are 1)potluck, 2)easy snacks 3)tell them to eat before they come. If there isn’t any food there, make up for it in how cool the show is and the environment you create.
Be clear about start and end times. If you have invited friends or made this event public, people need to know just how long they should be there. Let them know the breakdown of the evening. Will you start with socializing until a specific time and then transition to a listening room where everyone is seated for a listening room? Is it a Halloween costume networking event with live music in the background? People usually like a clear plan.
If it is a listening room where the musician plays a set while the guests are seated and listening, it is important to set clear expectations that once the set starts, people need to stay for the whole set. It is rude to leave in the middle or part way through of a performer’s set. Inform guests of how long the set is so they know what to expect.
I hope this helped. Don’t let being a host overwhelm you. If your goal is to do it well and get good reviews with people coming back, these are things to consider.