Borchardt is quite the scene! In a city that can be very casual overall, this is the restaurant to go to if you are looking "to see and been seen". Beautiful people and flowing cocktails abound!
Despite what you may hear from local Berliners, who may say Borchardt is a bit snobby and overpriced, we found Borchardt to be extremely friendly and serve quality German fare (the Wiener Schnitzle was fantastic) and international dishes. Yes, it is a bit more pricey than other Berlin restaurants, but coming from NYC we found the prices to be more than reasonable. Plus, the people watching is worth a few extra bucks.
What surprised us most was the number of locals eating here on a Friday night. Nearly every other patron came in kissing and hugging an older waiter and wanting to sit in his section (FYI - his section is the back of the restaurant). But, all the waiters were great - including ours. We were treated to after dinner drinks on the house and an invitation to dine there again that week - which we did!