Hello @Cindy660 ,
For the smaller washroom, you can create a new space called a Half-bathroom. If it is accessed from within the guest's bedroom, then choose Private and attached. If it is accessed from a shared corridor or another space but still private only for the guest's use, then use Dedicated. You can also specify exactly what amenities it includes.
For the bathroom on the second floor, you can set it to Shared with other people.