There may be many reasons, and what you say may be possible, but it is unlikely to be booked; There may be more than one bed in a room, but there may be a mother and family sleeping in the bed. This situation is more likely if an acquaintance is hospitalized.

Many hospitals have family warm wards, where families can have private rooms. I wonder if this hospital has it.

If you know the truth, you'd better know the medical staff inside. They may tell you the truth and take extra care of you.

The hospital is not a hotel, which is different from the outpatient expert number. You can make a reservation. Generally speaking, the ward will not be reserved!