The best barometer is to charge what you think your accommodation is worth. A great way to get a point of reference is to look at pricing for other accommodation in your area and price it accordingly. FlatClub also has a pricing tool that can help you get an indication.
When you get started on the platform it is a strategic idea to price your listing competitively until you have a booking history on the platform. With completed verifications and reviews you will be able to increase your pricing more successfully.