I have stayed in both, Tower 1 and 3 quite a few times.
I know others have said that tower 1 is the shortest walk to the path but i don't see it that way.
it's about a minute from T1 to get to the path.
i would not make it this the reason to consider of only taking T1 as the place to stay.
the walk from the elevator ground level from tower 3 is about a one minute walk to that path.
you have less steps to the walking route path from tower 1 but timewise, it's nothing to make a big deal out of.
the views from either tower are decent.
you have more of a better overview of the park from T3.
you have a closer view of the hulk section if you are on the wing area by the canal, side facing the park that is.
where ever you stay, you will be fine.
T2 is the one tower i stay away from.
less views of the park from there.