Just checked it out and gotta say well done! Runs smooth as butter and feels fresh in a way since some mechanics are different yet still the good old Long Story Short we all adore! Sure, since it's just a port it makes it easier when story/renders/scenes are already provided, but I've seen some horror ports and this is not that, like I said very smooth.
What's good for future with RenPy port for this particular game is that it invites more audience since some people are religious about RenPy only plus I suspect it opens it up for people who make mods for future walkthrough or even DLC type mods.
Only tiny flaw I see is that it seems there is transition used a lot between renders that, if clicking fast, seems like people are ghosts as the next render starts with previous still being there for a bit. So maybe if it is possible make it that this transition happens fasters or without overlay. I mean I bet it looks nice for first playthrough, but returning players who skip ahead might understand what I mean by this.
Anyways.. Good job on the port and you are a perfect author for it since you seem to stay in touch with original developer and on good terms. And speaking of which, I hope people who just now discover this amazing game supports the ORIGINAL PROJECT if able, since that's what will fuel future content and is the right thing to do, duh.