Translation of bunk in German

We decided according to whom we liked most and booked a trip for the next day. We looked for a place for lunch and found a restuarant called Pho 24, where they would serve soups for 24 hours.
Due to jet lag (for us it was 10p.m.) we could not sleep, so we stayed at the airport until the morning where we had to take a flight around 8a.m. The destination was Siem Reap in Cambodia.
As my wife is a travel agent, and knows that in certain cases people do not show up, we decided to take a taxi to the airport nonetheless. It was actually not far from the border, about 5 kilometers away.