According to recent research by money.com.uk, Bangkok is the most affordable city for luxury travel. The research is based on these factors:
Michelin Star meal
Five-star hotels (one night)
Luxury car hire (per day)
Spa hotel (one night)
And here are the top 10 popular cities that offer affordable luxury travel. Osaka (Japan) is ranked 4th, more budget-friendly than Tokyo (8th position).
Credit Source: https://www.money.co.uk/loans/luxury-on-a-budget