I love it. Our school has been using the Google Apps for almost two years now and we love them. I can't imagine teaching virtually without Google Classroom.
I love everything. Our students really appreciate that we use this tool in the whole school. It's easy to set up and work in it.
How I Use It
I have all my classes set up there not only for virtual teaching but also when we are in person. It provides a great space for a Self-Paced and Flipped Classroom. I can't say anything bad about Google Classroom.