Assuming you can keep your customer queue sufficient at all times, and that your clients can come when you are open.

Most likely this means a location that already has a high throughput of potential customers and that also most likely means a place that has high rents.

Sure, if you already have a place, like an extra room in your house, and you manage to establish yourself on the area. But even then you might find out that your first client wants to come in at 7 or 8 am, to get ready for whatever work thing they have that day, and the last client wants to come in at 8 pm, because they can’t earlier.