What is the meaning of "literally spruced up" in this sentence? [closed]

In this sentence they are talking about a holiday party - so likely the 'literally spruced up' refers to the room being decorated by a Christmas tree, which are commonly spruce trees.

Christmas tree is a decorated tree, usually an evergreen conifer such as a spruce, pine or fir, or an artificial tree of similar appearance, associated with the celebration of Christmas, originating in Northern Europe

https://en.wikipedia.org/wiki/Christmas_tree

To 'spruce up' is also an idiom, meaning to make clean or refined. From thefreedictionary.com:

Spruce up

To make someone, something, or oneself more tidy, refined, elegant, or stylish. A noun or pronoun can be used between "spruce" and "up."

https://idioms.thefreedictionary.com/spruce+up