In addition to the payment of the room and therapy charges, it is advisable to bring some money for extra items, which you will not pay by card or shopping trips to the nearby town Lonavla.
Exchange of foreign currency into Indian Rupees can be done directly at the airport, however usually with a poor exchange rate. Money can also be exchanged locally in Pune and Karla. Whenever you change money, count it carefully, both before and afterwards. Make sure that you are given a "foreign exchange receipt". This should be kept carefully since it is to be handed over when registering in Atmasantulana Village (only in the case you pay your stay by cash).
For cash withdrawal by card, you will find several ATM services in Lonavla. For foreign cards please ensure with your bank at home that your card has been authorized for withdrawals in India.