A free or cheap room in a flat/house

For the past while I’ve been working on a community project which I’m really passionate about and which I really want to see become a reality. For this reason, due to spending full-time working on it, in addition to a few other reasons, I am not earning any money except the odd job here and there for living expenses. I am risking quite a bit at the moment focusing my all on this project, hoping I can kick it off the ground soon! 🙂 So, I know it’s a bold request, but I have to make it. I would be so thankful if you had a free room that you are not using that you could offer me. This would enable me to stay in London to work on, as quickly as possible, getting this project up and running! If so please contact me and we can discuss what I can offer in return, if you need some work in exchange, house-sitting, pet-sitting etc. Thanks so much! 🙂