Rocket's documentation and overall 'dev experience' are very pleasant. In the past, I felt like I was making a significant tradeoff when using Rocket over more actively developed frameworks (Axum and Actix Web). With v0.5 (finally) coming out, and the Rocket Web Framework Foundation, that feels like much less of a concern.
A great example of Rocket in use is the official Rust website, which is open source.