Q2. Please let me know other cost except the rent like deposit and key money.
Key money is not required but deposit will be requested to pay at the time of check in for monthly stay which is equivalent to one month rent.
But the amount of deposit will be different depend on the lease period. The deposit will be refunded after deducted the outlays such as telephone charge, dry cleaning charge and etc.
In case of short stay (less than one month) neither deposit and key money is not required to pay . The rent covering whole period of stay is requested to pay at the time of check in.
The rent for short stay includes all utilities(gas, hot & cold water, electricity), internet access and etc. In case you use telephone facilities you are requested to pay for it.