A comfy sci-fi read. I really enjoyed the care the author put into building out its cast of alien species. The aliens aren't just humans with different skins, but there's some thought put into their cultural differences and histories as well. And even within the humans, there's a varied mix of cultures too, depending on whether you were rich and managed to escape Earth to live in colonies on Mars, or if you spent your entire life living aboard a generation ship.
Keen to give the second book a go!