Not sure if you are still looking for someone but I saw some adverts hanging at the vet on the Hoogstraat in Eindhoven. So I would suggest just give your own vet a call and ask if they can recommend someone. I also saw an advert at the vet for this site called https://nl.pawshake.be/ - individuals can subscribe themselves there as petsitter and you can contact them to see if they can help you out.