I've had my bike serviced at the Thube Park bike zone(near sancheti hospital) and I have to say they're pretty good. Friends got it serviced at the Kalyani Nagar and Mundhwa bikezones, and they're just as good.
Don't expect fantastic servicing or anything. But its better than the local mechs. Get the servicing packs, dont get any other small work there though. The servicing is well priced, the rest is too expensive. My full servicing is 320 regularly, but getting a handle straightened after a parking fall was 450 bucks, where as at the local mech it'll be 80 bucks. Kinda stupid. Otherwise its great. Have good tools at their disposal, so no hammering and brute forcing their way through stuff. mechs seem to know their stuff.
If you're the kind who doesn't know their bikes well, get ready to be handed a nice big bill. If you know your stuff, or just are curious enough to ask about everything they're going to do, they'll do a good job and a good price. I usually ask, but that one time I didn't ask about the handle straitening, I got screwed lol. But then, they fixed that well too. All in all, best mech you can get. Better than showrooms. Better than raju mechanic from the corner of the street.