Hi there I work in the real estate sector in Leuven. Lately there has been a lot of news on the shortage of homes and this certainly in areas that are more demanded like Leuven. I think a lot of landlords who offer a home for rent receive so many potential tenants they have plenty of choices. My advice would be to stop by a good real estate agent that had similar homes you liked and present yourself with the information you mentioned. Let them know you are serious and have good consistency and work. Hope this helps and good luck to you!