I had a single room too and Dad's weren't supposed to spend the night, but they were allowed to stay as long as they wanted too... so DH left one night at 11pm and they were allowed back in at 6.30am... I told DH to sleep in and come in later in the mornings like around 11am and then stay until late. It was good for him & the dogs too He would walk the dogs in the morning & mum would go home around 5.30pm and feed them at night so we would have quiet time in the evenings together.