Well, it's convenient, but very often there are huge queues such that you can stand for 2 hours, you have to stand on the street, tests are taken quickly well and without bruises
The main advantage is the absence of a queue. Jostling among those who want to take PCR is a dubious and unsafe pleasure. I took the test five times. I've never been in the queue. They accept cards for payment. The result is sent quickly.