Walking through the main entrance of the Bolyai Institute, you find yourself facing two statues and some stairs. Walking up the first set of stairs you reach the so-called "half-floor", which is NOT the first floor where office 140 is located. So you have yet to go up one more level. After doing that, you have to go left and walk for a long time. The corridor turns, you will even cross a staircase, but after all that, at the end of the corridor, you will find office 140.