I like the laid back vibe. If you wanted you could throw in a bit more variety with the guitar by having say an echo effect that only echos out the last note, or a chosen note in the bar. Something like what performing guitarists do with their pedal boards to quickly trigger an effect. I also wish the arrangement was longer. Maybe you were getting to that but I think I'd prefer if it was 3-4 minutes giving you room to experiment and solo on the guitar a bit, or even drop out the guitar to simple rhythm and get the piano going wild.
Also, I'm new to the forum. How do you get the source video to appear in the forum as a video? I couldn't figure it out in my recent post. I tried embedding but it just showed up as HTML code... If you have time to answer let me know. Thanks.