Nine Lounge

You're walking along Tunnel Avenue and stumbling into something that feels properly cosmopolitan for South East London. Nine Lounge does Estonian cuisine—which honestly isn't something you see every day in the capital—and they're clearly doing something right with over 4,000 reviews sitting pretty at 4.5 stars. The space has that understated, confident vibe of a place that doesn't need to shout about itself; they let the food do the talking instead. It's the kind of restaurant where locals have already figured out it's worth the trip, and word-of-mouth has built something genuinely solid.