This is a small but well-equipped apartment (combined sitting area and bedroom); very very close to the U-Bahn stop, which is a huge plus. This location will put you a number of stops from the city center, but mass transit (U-Bahn) is very easy and the total from apartment to Central Train Station is perhaps 15 minutes. You could actually cook in this kitchen if you wanted to! If you are looking for interesting food, we recommend Ho's Sushi just opposite the soccer stadium: very nice Vietnamese (and probably too spicy for the Germans. The area is very quiet, except that the grocery store trucks unload early in the morning just outside.
P.s. Watch out for the cabinet over the toilet or you will bang your head!