Not enjoying post doc work environment
Sadly, I am an American postdoc in an American lab, and I am experiencing the same issues. The details are different, but the sentiment is the same--the laboratory is not conducive to work. At all. It is a noisy, distracting place with coworkers of all varieties doing any number of distracting activities. And right now, I have to write, and i have to write a lot. My PI/boss likes to be able to also come into lab and look over our shoulders, to make suggestions and check progress. This is entirely unnerving to me. it's compromised my ability to be productive and keep those standard hours in the lab. So, I employ strategies- noise-cancelling headphones. Working from home. Telling everyone I'm writing and getting the biggest headphones and possibly sporting a slight scowl in general. It's not fun and i'd love an office. But for me, the bottom line is what I have to show for this experience when it's over. And I'm willing to do whatever it takes, because this is a great opportunity to advance my career. And i need it and i want it badly enough. But, that said. ...it is difficult and the environment works against me, daily. It might be something you encounter in an ideal setting. 

And what i've found...is doing 'whatever you must' to be productive, might get some odd looks. People might talk or be judging. Someone might not like you working from home or keeping odd hours. 

But you will have those first author papers. And that matters. That matters to your boss, the department, and for your career--far more than whatever situational annoyances arise in the process. You've got to get yours.