If you are looking for a barbershop in Belgrade, go here. The master cuts perfectly, there is always a convenient time for recording. The price is fully consistent with the quality.
I came by in passing. I found a barber who is good at hair tattoo. However, there was no free entry, I came the next day.
All the staff is friendly, Russian-speaking.
I was satisfied with the haircut. It's rare to be so lucky the first time.