Verses with the word chamber in the New Testament (3 verses):

Acts 9:37
And it came to pass in those days, that she was sick, and died: whom when they had washed, they laid her in an upper chamber.

Acts 9:39
Then Peter arose and went with them. When he was come, they brought him into the upper chamber: and all the widows stood by him weeping, and shewing the coats and garments which Dorcas made, while she was with them.

Acts 20:8
And there were many lights in the upper chamber, where they were gathered together.