Found a maintenance page that actually explains what gets done, anyone tried them?

I've been doing my own research on where to take my 3 Series for its next service and I stumbled across bmw-garage.ae/maintenance/ while comparing options. What caught my attention was that it actually breaks down the different maintenance items rather than just throwing a vague price at you, which is more than I can say for most of the garages I've looked at. I'm still not fully convinced though, because a nice website doesn't always mean good workmanship, and I've been burned before by a place that looked professional online and then returned my car with a loose trim panel. Has anyone here actually used them for routine maintenance and can tell me how it went? I'm mainly curious whether they stick to the proper service schedule and use genuine parts, and whether the pricing stays close to what they quote upfront. I don't want to spend another month going back and forth on this, so any first hand experience would be really useful.