You HK tax bill would be approximately HK$1500 per month, so your net would be HK$28,500 which is about 2450 Euros per month, so it is a bit higher than currently.
Tax calculator - your income is HK$256,000, and the value of residence provided (the way your housing allowance is taxed) is HK$25,600.
You can live very comfortably as a single guy on that money, but you'll start feeling inadequate if you mix with bankers who gamble with other people's money for a living.