As the Ocean Sprint is almost just around the corner, there are a few important things you should read:
The official channel for sprint-related communication is hosted by Matrix and you can install https://element.io/ to start chatting. Invite: https://matrix.to/#/!oCBaiuApDhOXZfQWYU:matrix.org?via=matrix.org
Use the communication channel to group up to reduce the costs of the accommodation.
Try to be as close to "Calle Catamaran" street (where the sprint venue is):