Good ending was one of the first romance series I read so perhaps that's why I have a soft spot for it. Personally, I think it's quite enjoyable, especially the first half in which the series felt quite unique. Afterwards... although, not awful, it was just okay. IMO the author began overdoing some of the elements that made the series stand out to the point where they became cringeworthy.
Regardless, I enjoyed the series as a whole way, even with its issues you'll still want to know what's going to happen next. Plus the art is pretty nice and I love the outfits the author designed for each one of them.
Read the first chapter, if you enjoy it then go for it. Otherwise, you won't probably like it. However, beware, like I said even with its issues you'll end up hooked with the series.