We are from Australia (couple 50+) and are devotees of Thai cooking but after a week of indulging we really needed a break and being from Australia, Italian is usually the chosen alternative. As readers would know, picking a good Italian restaurant in Bangkok is like picking a good Thai restaurant in Rome. So we relied on TripAdvisor's reviews and picked Il Bolognese. Really superb. Great Italian wine, great Italian food, great ambiance, great service. Sure, the wine made it slightly expensive but that was our choice. Wine in Thailand IS expensive (a strange tax regime) and at least this was a good wine. As others have said get your concierge to tell taxi driver where to go and bring the restaurant phone number with you just in case.
Great last night of our holiday.