Is a deposit required?
That depends on the respective host. In general, however, the following applies: There is usually no deposit required for shorter rental periods.
For rental periods of one month or more, many hosts require a deposit – usually one to two months’ rent. The deposit is there to help hosts protect themselves against possible damages. A maximum of three months’ rent is legally permitted for the deposit. You have to pay the deposit before moving in.
If there is no damage, you will receive the deposit back within 14 days of moving out.