Translation of tetrahedron in German

Let me know how we can proceed and how I could help you further. I am looking forward to share lessons and maybe meet you in person in Singapore one day. Kind regards to you and your wife.
The problem is that we are planning day by day and in our region (Maine, New Hampshire...) most hotels are 'by request' and not by 'space available'. I could do it but I would need to do the follow up.
By the way, after my horrible experience I had changed the hostel. The place was not really better but much more quiet and near the Ocean. I woke up with the sound of a siren. It was the police.