Slick and Smooth.
I like it. Great work with the overall flow of everything, and on top of that all the mastering and balance. I love the jazzy stuff that just slides right in there.
I only have one suggestion for you - there's that section that comes in at around 48 seconds in. The piano sounds like one of those really old electric pianos (werchester or something?) that only had one sound and a single control knob (volume). It sounds fine (really adds to the flavour of the piece), except with the really high octave at 0:48. The only reason I think it's grating at all is that it sounds a bit squeaky with that high overtone. Maybe if you lowered the filter frequency on it just for a moment there... but I'm sure there are other ways to do that, too.
I hate to write so much about the negative things with a piece so great, so don't let the length of what I wrote fool you. This is a great piece, and genuinely deserves the glowing 10/10, 5/5, Favs that I've awarded it. Yet another ambient masterpiece.
Power to you, Mjattie!