Dear Tobi, 
Looks like you're happy that OSM in this area is now in line with what can be seen in real life? That would include steps (bicycle=dismount) to te underground bicycle parking, with 'fiets goten' either side. 
There is also a grass paver strip between the roadway and the cycleway to allow emergency and selected service vehicles to access the site. 
The main motor car entrance is along Borsbeekbrug, where you'la lso find the entrance to the underground car parking. 
Best to wait for recent Mapillary pics. 