There is no deposit fee for a period below three months. A hero is only charged a booking fee or his/her monthly package deal.
In the event you would like to extend your stay, a new booking should be made. Extension of your stay can be facilitated by the host: extra services will be charged at the end of your booking with your check-out at the reception of the supplier, you first need to validate this extra charge through your mobile app.
Beyond the period of three months, the requirement of a deposit may be demanded by the office provider but in no way is this a mandatory condition that applies to all spaces.