Berlin Mitte: Agree, yes, atrocious service, many arrogant people, no credit cards because of tax fraud (Lived the startup life in Berlin for 20 years, "Monsieur Vuong" was IMHO the worst for service and arrogance - but then there is "Il Pane e le Rose", lovely people, went there for 20 years, or "Restorani Tbilisi", my favorite restaurant in Berlin, most excellent food and service).

Nice city somewhere else: No. Here in Stralsund we go to 5 restaurants regularly. All are nice, have excellent service, people are friendly, prices are fair (But I so miss Georgian food).