The roof is not removable, those are two separate sides of the deck. The left corner has a table and chairs and the right corner with the pergola is the lounge seating area.

I think it's important to let readers know that rugs on decks have a terrible impact on the wood. The wood ends up stained and sometimes mildewed, causing expensive deck repairs. If want to use a rug, better on concrete or some other hardscape. It'll still stain it,but a deck rug will create a big ugly mess and damage the wood beneath it.