Of course roti king doesnt have its own webste as it is a small family style business they do have a facebook page see further down.
Open 17:00 til 22:30 everyday except sunday. We are unsure when it opens as Trip Advisor says 17:00 but we know here it is also open for lunch. ->
"Authentic amazing Roti!! Just cue up and order with the locals. You will not be disappointed. Scrumptious"
source - megbel from TripAdvisor
You might struggle to park in St Johns but there is a car park near redcliffe quay. Try sidestreets slightly away from the centre if not. You probably won't be driving especially to get a roti here ! So just take a mental note to find them on St Mary's Street tel 462-2328
see how a typical roti is made by this indian chap - good video !