WPML - Translating MotoPress Hotel Booking
The MotoPress team has provided a guide to help you translate their Booking pages.
How to translate MotoPress Hotel Booking with WPML
Calendar not showing up?
If you are trying to Translate the Accommodation ID on any of the widgets, there is a reported bug within WPML. You can find the work around here:
Don't for get to translate your Rates in all languages.