I need to find places to stay for upcoming trips for voluntary projects with 10,000HOURS (Dutch charity helping less privileged/disabled people and helping the organisations that support these people) I will be travelling to the Netherlands a lot for these projects, and will be on a very tight budget due to the voluntary nature of the projects.

Travelling from my home in the UK to the Netherlands just to volunteer my time with a Dutch charity helping disabled children to rebuild a garden In the children's home so they have a nice area that they can relax in.