ANTS! So many insatiably greedy ants everywhere. However Willem did say he would fix it for the future, albeit on our last day when we were leaving.
Other than that, like the other travellers have stated, there was a noticeable stale odour likely from the ventilationless bathroom.
The location though was the best. Insanely central and easy to locate. If the ant problem is solved and you can handle the odour until you air out the apartment it's a pretty sweet pad.
Oh and the wifi is spotty.