A short yet well-constructed loop. The melody and pacing definitely brings out the relaxed tone of the piece, and the repetition does well in perpetuating the establishment. There are enough distinguishable patterns to maintain interest and preclude monotony.
One potential concern, though, is the relativity high-pitched eighth notes played in the background (An example demonstrating what I mean is the sound that comes in at the 16 second mark) They sound nice, add texture, and provide momentum, but their timbre (or perhaps pitch?) seems to contrast considerably with the rest of the instruments and disrupt the natural mood.
The effect, however, is meager, as the mastery of the piece is high enough to submit such contrast as mere subjective understanding. Overall, great job!