Home salon services exist in this region partly because privacy is not a preference but a requirement for many clients. Women who wear hijab can have colour, cuts and styling done without the semi-public exposure of a salon floor; a female-only technician can be specified at booking, and reputable vendors treat that as binding, not a soft request. Confirm it explicitly rather than assuming, and confirm it again for large bookings where a company might send a mixed team for a bridal party. The reverse consideration also applies: some households prefer male barbers for men's services to come at times when women in the home are comfortable.
Finally, think about who else is home. Nannies, drivers, visiting relatives and children all change the working environment, and a beautician needs a defined space with a door more than she needs a big one. Chemical services, colour, keratin, acrylic work, also need ventilation, so the smallest windowless room is the one place not to set up, however private it feels.