Basement storage with easy street access in Bos en lommer

The storage is located in the basement of my building. Only residents of the building can enter with a key. The storage itself also has a key which is the same key to my apartment. The total space is over 8 square meters and about half is unused. I have my personal belonging there (some boxes, a bike, a door, etc). Access will need to be by appointment as I cannot give you a copy of the key (it is the same key to my own apartment). I am flexible with this as long as it is done with at least one day in advanced.