From my room in Barbados, it was about a 7 minute walk to the main area. From Trindad South, its more like ten, but no more than ten for me at a leisurely pace. Yes, if you are in say bldg. 14 of Barbados (I was in 16 so closer in), it wouldn't be that big of a difference. I can see how some people would not like this, for me it was fine. It is a lovely walk at least! One thing about it, TS has a great quiet pool, its own bus stop and its very quiet and peaceful back there. Its only going to the main area that may present a problem. And again, it may very well not.
By the way, I didn't stay in Trinidad South, but for some reason my daughter took a liking to that pool (probably because she frquently had it all to herself) and we would walk over there to swim. Past the pool in Martinque and Old Port Royale! I had dreaded we might get that section but found to my surprise the walk wasn't that much longer than our room in Barbados. I liked that area so much, next time I would request it. Although if its all Pirate theme now, I probably wouldn't!