We have spent a very nice weekend in this apartment. It has one bedroom and a livingroom with a sofa-bed so for short term it's good for 4 people as well. The apartment has just been renovated, so everything is very nice and clean and very well-organized. Christian was very kind to leave also coffee and cookies for the new comers.
It is about 7 minutes walk from the metro station, but it is easy to find and after in 20 min you can be in the city center.