What is decent salary to stay in Seoul, south Korea?

What is decent salary to stay in Seoul, south Korea? I am going to get 4.8 million won in hand/month. Is this sufficient to stay in Seoul with spouse.

With your spouse, I guess 3000000won. But it differs largely on housing :)

Depends on where you live, but that is much better salary than many locals get. You should be more than fine, depending your standard of living.