Translation of differentiation in German

There are very cheap language courses at the stores in Germany, but they aren't all good. At our school we have private clases. 60 min costs 20 Eur and 45 min 15 Eur. If you are interested, I can book it for you.
On the first day in Hanoi, we wanted to explore the town. It was the former capital of the North and today it is the capital of the entire country. There are tons of monuments and governmental buildings.
We stood there in the middle of the night in the middle of nowhere not exactly knowing what to do next and where we arrived. We had to look for a place to sleep. The village did not have any paved streets.