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Floor Sander Hire or Floor Sanding Service
Rental:
https://www.abloc.be/product-category/poncage/?gclid=Cj0KCQjw4eXPBRCtARI...
Service:
http://www.bricoleur.eu/
There are many more, Google is your friend.
Don't know about distance but Boels in Overijse hire all sorts I think they have other branches,
https://www.boels.nl/en/branches
Don't forget that the dust from sanding gets everywhere so you need to do a VERY thorough job of sealing everything up including doors and cupboards, etc, before starting to sand. You will need to wear professional quality protection gear as well.