With regard to the accent in the book there are two pieces of advice, which are important to remember:
In English it is much easier to write than to speak because you can write without a foreign accent and in the street it is better to speak quietly in good German than to shout loudly in bad English. Maybe it is better, when you don‘t speak at all. And it seems to me the best thing you can do is never go to England because it is very strange country, which much stranger people live in.

As for me, this piece was excellent. It made me to smile and it was interesting, too. I enjoyed reading it very much.