The overall feel is very nice and relaxing - I enjoy the music a lot, and the minimalist style works well for this kind of game.
I could not get past the first level that requires jumping - unsure if I missed something or if there is a bug, but even with several tries, the jump distance always seemed to short. Holding it down, double tapping, trying double jumps, nothing seemed to work. Also tried holding stuff like shift or ctrl in case it gives you a speed boost.
But overall, good job!