Is there any way to have a round hole in a celling?

Custom modeling for ceiling on top floor-tips: figure out exactly where you want the circle/hole. Create the ceiling for the room. Then use guidelines to mark off a square (outline for where the circle will go), divide each side of square in half, where the guidelines meet in the center is where you start your circle. When done & back in design interface, hide the model, click on the room & on right side menu towards the bottom you should see where you can 'show ceiling'. And let the sun shine in!

Yes, there is, you could achieve it by modeling in the Interior Modeling 2.0 Feel free to check out the tutorial in our Learn Page.