This is very relaxing for the most part, and the ending is quite satisfying! I like the melodies and chord progression. My only gripe is that I feel that the two sections with the slower rhythm could be a little more interesting; they could benefit from some light countermelodies or flourishes. I think it's a good idea to have these rhythmically slower sections, but the sustained synths in unison don't sound very pleasant because there's naturally little expression. The addition of ornaments could alleviate that.