Which online book editing services are most trusted by writers?

[cecilamoore]

I’m currently preparing a manuscript and looking into book editing services. Who here has real experience with editors for grammar, structure, and story flow? Which platforms or freelancers gave you the best results and why? How do you judge quality and pricing before hiring? Have you used online book editing services that improved your work significantly? I’d really appreciate honest, detailed suggestions from writers or editors here.