I wasn't impressed at first. The protagonist Nadia starts off very unlikable and I felt the 1st episode ended abruptly, with little hint as to whether the rest of the series would be entertaining.

However I'm glad I continued watching as the story became increasingly intriguing and I practically binged watched the rest of the series in a day.

After watching the finale, my opinion is that this is probably one of the best time loop stories ever told.