The part where you broke from the rhythm was honestly my favorite part. As some of the elements of the song became repetitive you pushed the song along to a new path. Loved the progressions in the latter part of the song that you brought back from the beginning.
The only things that really stopped me from giving you a higher score were the seeming lack of crescendo/decrescendo. You have so much change in the song without volume change that it ends up making the sound seem flat. Way too much change to be ambient music but then feels so flat that it doesn't feel dynamic. Maybe that's what you were going for, but relaxed/ ambient songs don't usually have so much change, so fast. It's like a dance song that has ambient elements? I don't even know.
Good song anyways ;]