I am not a fan of the bathroom design at many of the Springhill suites. The door is made of glass and is in the middle of the room. Due to this, if someone enters the bathroom at night, the light from the bathroom fills the room, waking the other person up. Even though the door is not transparent (it is translucent), it still is uncomfortable in my opinion. Give me a regular door for privacy and keep the light where it should be at night.
Also, all of the hard surfaces in the bathroom amplify the sound since it is in the middle of the room. It is hard to sleep through all the racket.
Obviously, when traveling alone, this is not a problem.