I don't like giving books that tackle such horrendous matters such a low rating but this book wasn't good...
At some points (as in, most of the story), while listening to the audiobook, I didn't feel like the setting was a concentration camp. Lale walked freely to pretty much everywhere (even when he wasn't the Tätowierer) and very sparingly noticed the horrors that were happening around him.
I'm sure the real Lale lived horrendous stuff that marked him forever but I personally feel like we were never given a glimpse of that (were the editors too scared of sharing how morbid concentration camps actually were?).

At the end of the book, I just felt like the story romanticizes concentration camps (how is that even possible?) and it felt vague and badly built.