This is great but...

You really have a nice sound going here, but I think your problems shine after four minutes lol. While usually ambient you can take it alot slower on the melodic side and let a simple chord do its job for the longest time, it doesn't seem to cut it as well with your bass synth going back and forth between the two same notes. Regardless how we'll you spiced up your break drums (which you did just fine :D). But what really nails people is not only how well you use a chord but when you change one and maybe add a little something to make them go "wow this song is incredible". It's that change in progression that really feels perfect in a song when you do it right. The sound is great you just need to try and change up the chord at some point.

Also on a personal note, I'm not to big on your drums or really your mixing in general. The mids are like being pumped and the lows aren't defined super well. I'm really wanting to hear some nice high notes (but if that's just data size or soething that's cool).

Overall though great song, there's just a few things you can do to take it to the next level :D