The new wooden parquet floor is installed and destroyed in exactly the same way as before. Zurich contractors are consistently incompetent to all their jobs. On the photos below you can see the original damage on the left (July 2013) and the new damages on the right (March 2014).
Of course, it would be naive to expect only one damage. The contractors also managed to destroy the Ethernet socket, a double socket and the door entrance frame. See photos below:
I have also noticed the following imperfections:
Finally the top floor and the stairs were full of dust since the contractors did not sill the upper floor as I had requested for 6 times.