My poor roommate wasn't feeling well so I googled "Best walk in clinics Toronto" and Infinity was at the top of the list. The main selling point had to be that you can make an appointment! :)
This is a secondhand experience since I wasn't the patient but I didn't find anything particularly off putting about the staff (though the pharmacy employees next door were awesome). Roomie said the doctor was very nice and professional and prescribed her what she needed.
All in all, a satisfactory experience.