If the economic conditions are good and you want to improve the decoration, you can decorate according to 1500- 1800/ square.
If you want to decorate in general, you can use 800- 1000 yuan/square, which is generally fine decoration.
If you want simple decoration, you can invest about 600-800 yuan/square meter, and generally decorate.
If the decoration investment is 300-500 yuan/m2, it is a simple decoration.
So the amount of money for house decoration mainly depends on your economic situation. According to your economic investment, if you invest more, you will decorate well, if you invest less, you will decorate generally, and if you invest less, you will simply decorate.