My idea is to have a van or truck which can be moved to different locations as required. It will have small pods for the homeless to sleep in overnight which are secure.
The idea is for Pods or capsules like some of the Japanese Pod hotels. They are small and safe.They could be designed as a trailer or set up in a truck. The truck or van could be set up near a hostel or moved as per demand. They would be simple inside and easy to clean. If the homeless can get a good nights sleep in a safe secure environment it might help them each day to work on getting their lives together without the added stress of being tired and worried about personal safety while sleeping.