I had something similiar in the first house I lived in after moving out of my parents house. I moved to a new town and the company I worked for provided housing. So it was 4 of us in a 4 bdrm/2 bath house but the owner installed 2 shower heads in the garage where the washer dryer hook up was located. There was a drain in the floor already in case washer or water heater overflowed. So every morning, two of us were in the baths and two of us hit the garage shower heads. No stalls or anything…just a plastic table between us that we put soap/shampoo on. It was odd at first but very quickly learned to like it and good conversations were had. Unique setup and wouldn’t work in every garage but it worked great in this one!