Casa 400 is somewhat renowned in Amsterdam: in the summer it is an hotel, but in low season, it provides accommodation for students. This is a unique formula and one that fifty years on is still proving successful. Casa 400 itself has kept pace with the times, however, which was why it moved into an impressive, brand new building in 2010, incorporating more luxurious rooms, more state-of-the-art facilities and a conference centre. The hotel now also operates the whole year round. Casa has been awarded the Gold Green Key Certificate, the highest Green Key status a building can possibly attain.