travel means "podróż" so it's clearly a different sentence. Also your answer would need a or the before travel to be correct.
I disagree. For me travel can refer to the act of travelling in general and Meikel's sentence is fine. Adding a definite article would be strange here.
Yeah can it's possible to say that in English talking about travel and talking about travelling are the same thing....it seems though in Polish there is a distinction in these two things