Got some mid 2000's vibes going here, pretty chill feeling overall :) Kinda reminds me of High Contrast a little bit.
Got a few things:
-The first intro bit could use an atmosphere under it, I like the chords you're using but the silence between the first few chord progressions really hurts the flow there. Doesn't need to be anything huge, a low pad or even a longer release/reverb on that piano could fix that easily
-Your sub is peaking pretty badly at 0:44-1:27ish, along with the other areas of the track it's in. There's a couple ways you could get around it though. You can sidechain the kicker and snare against it to duck it when the beats hit, and/or run some limiting through your master channel or a submix of the bass and drumline to keep it from peaking.
-Might just be me, but if you dulled down the hats a smidge they'd be spot on, like 5-10dB
It's a nice clean sub that feels great in context with the rest of the song, would love to hear it cleaner in the mix
1:27-2:12 - This whole section is fantastic, it's perfect for the track, major kudos on this bit
2:12 - I really like that synth stab you bring in here, it's a subtle touch that really brings this bit up from the first half
3:38 - This needs just one more chord to close up the track, you kinda left it on a cliffhanger with that last chord, sorta like when you end a progression on a leading tone but with nothing to get closure with. Combined with maybe some reverb or a longer release on the piano would be a good sendoff to end the track on a good vibe
Overall, digging the track, brings me back to those days before the dark and gritty era of DnB that could chill you out at a high tempo