Thanks to PCBWay, which kindly sponsored 200$ for this project, I recently received a fully-assembled board (minus the through-holes which I decided to assemble myself). You can see a few pictures here:

Working with PCBWay was quite pleasant. They send you pictures and confirm component placement and polarity with you before shipping.

The quality is great, and assembly process was quite smooth. There were a few issues for component sourcing, but they were quickly resolved after communicating with one of their engineers. The board worked on the first try with no issues.