This is a good manga, even though the story is a pretty straightforward ghost story, mixing some eastern and western ideas about ghosts with a touch of urban legends and creepypastas. Nothing special about the romance element as well, there are plenty of books about otherworldly romances out there (they're usually called paranormal romance, if you're interested in the genre) and this story does nothing different on that aspect.
No, Tasogare Otome has no groundbreaking story, new ideas or original approaches. What it has is efficient storytelling, good characters and outstanding art. Maybe has a beautiful style, with a good grasp of narrative and a knack for keeping the delicate balance of a romcom/horror story, which require completely different art styles and narrative choices. This is one good artist.
So, should you read it? Well, if you enjoy ghost stories, as I do, you'll like it. Same thing if you enjoy romances or school-related stories with a touch of mystery. But, honestly, it's not something you'll regret missing, so, if you're short on time, go for other manga.