A spare room for 4 months: María, working in Madrid, between homes

After a flood that wrecked my apartment, I'm temporarily without a home. I work as a hospital cleaner in Madrid and I have a steady income, but I can't find a place that will let me in without the first month, a deposit and references that I'm in the middle of replacing. I'm looking for a spare room for 4 months. I can pay $240 a month toward bills, I'm tidy and quiet, and I'd be happy to help with cooking, shopping or yard work. I have no pets, I don't smoke, and I have three personal and work references. I understand that inviting a stranger into your home is a big step. I'd be glad to meet in a public place first and to share my work details. Thank you for reading my story.