We didn't meet Frederic, but he advised us via mail how to get in and where we would find the key. The first week after my booking I didn't hear anything back, no confirmation or whatsoever. But 3 days before we went to Antwerp, he let us have the info.
I had to call him on the phone as the Receiver didn't start. He himself was on Holiday, but still he was available, which was good.
The Apartment itself was very clean and nicely located. We found everything we needed. There was no street noise at all, the only thing you might hear is from the Apartment above as it is an old house where you have to expect footstep-sounds.