There's also a piano in the room. | My 'sister 'plays the piano ↑ very well. She loves music. | To the 'right of the piano } you can see a door. | It's open.

Solution:

• This text continues the description of the room.
• A piano is present, and the speaker's sister plays it well and loves music.
• To the right of the piano, there is a door that is open.

Answer: The room contains a piano, which the sister plays, and an open door is located to the right of the piano.