Imo: Easy to complete - Medium to get started right, Easy to avoid mistakes - medium to optimize, Easy in the design context - medium in the number of moves. It really depends how you wanna see it. I'd go for medium and 5/5.
Yeah, I guess I see what you mean OMR. The gameplay aspect of it is definitely easy-level, but the structure of the level is more medium-level (I hope people understand what I mean by that lol). I'll change it to medium if more people comment.
Play Level "Nebulae"