Calming, with it's harder spots.
Like most ambient songs, it's very relaxing. The delay in the drums is a nice touch to add, and the beat itself if relatively simple. The clean guitar has a night melody to it, but I feel like it kind of clashes progressions you use. The second time you use that melody, it blends in much better. The progressions are soothing... The arpeggios used mix in quite nicely with the backround ambience. Near the end, the change in drum beat really threw me off, but it changed back which was kind of nice. The part that has the standalone piano-type sound has a weird fuzz to it, it made me think my Interface was screwing up.
The instruments went well together, you way you used the effects were quite well used. Although I'm a person that likes to hear more guitar if there is one, and I found that it was hard to hear the guitar in the later parts. But then again, everyone EQs differently. It's just a preffered style for me. Either way it still blends well with the song, and still succeeds in giving a nice calming effect in the song.