My coworking space has acoustic dampening all over the place, which helps heaps.

We have booths for phone calls/skype/whatever as well as multi-person booths for meetings which are all super well dampened, you can barely hear people outside of them.

I guess they're very similar to a snug like you're mentioning. We also do have some acoustic suppressing things hanging from the roof (it's a very high-roofed office). There are also seperators at the desks b