There is usually a difference but, as always, the context has the final say. "fix" usually means to repair a flaw. "fix up" usually means to clean up or prepare.
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There is usually a difference but, as always, the context has the final say.
"fix" usually means to repair a flaw.
"fix up" usually means to clean up or prepare.
However, in the context of the sentences you give as examples the meaning would be the same. That is, "prepare this room for the guests."
chiageraldineShould I say "Fix this room for the guests." or "Fix up this room for the guests"?You fix something that is broken; you fix up something that is not tidy or orderly. So I would say Fix up this room for the guests. Actually, I would say Fix this room up for the guests.