The eleventh book from the Red Rock Mysteries series, *Windy City Danger*, has the following excerpt

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> The production was set up in the corner of the warehouse behind the main showroom. It took forever for Dustin to position the lights. He moved them to one side, then the other, then moved them back, then forward.
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> Carolyn and I put on our own makeup, per Grander's direction - this was a pretty low-budget affair. The script called for two typical teenagers standing in front of a living room suit. I would sit in a huge recliner and say my line, and then we'd **show off a bedroom**.
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> I knew it might take a long time because I'd been to the filming of a movie in Chicago once. The scene was just a guy walking to his car with a cell phone to his ear and driving away. It took almost six hours to shoot, and the crew said it went well.
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what does "show off a bedroom" mean here? I understand that the text is about some warehouse with the showroom. A showroom is a part of the shop in which a buyer can see the goods.

Carolyn and I (meaning Ashley) put on their makeup under Grander as their supervisor. The text then talks about there being a living-room suite (I don't know why because living-room is seen in hotels). Maybe the living-room suite was of a movie studio? Then I studied dictionaries and they talk about "show off" as to mean "to boast or to say proudly". If so, why are both of them (Carolyn and Ashley) showing off about one bedroom (are they sisters by script)? Does it mean they walked in that bedroom and a camera moved behind them to show it all?

Since they use the article "a", it tells me that the room is not near the warehouse, so is it their property that the people in the studio can't see?

Can someone explain to me in simple words what it means to "show off a bedroom"?