Translation of breakneck in German

I entered yet another suite. This one had a living room, a kitchen, two bathrooms and a huge sleeping room. The view was excellent, overlooking one of Saigon's largest and most impressive boulevards.
I understand that you use the article 'die' when talking about a feminine object, das when the subject is neutral, and der when talking about a masculine object. But how can you remember all these?
The next day we had the feeling that the worst of our altitude thickness was over and decided to take the local bus to the Sacred Valley, a key area of settlement to the Incas.