Both Marx and Bakunin agreed:
Society should be made from small self-governing communes. Each commune is to own its means of production and regulate its territory. These communes are supposed to be small enough to allow easy management. So one commune would have around 50 - 100 people in it. They would regulate production, set prices of their products and manage problems.
Society would be consisted of these communes.
Now, where did Marx and Bakunin disagree?
Marx believed that after overthrowing capitalism, there should still be a state to ensure order and keep communes from fighting each other, as well as to protect the communes from capitalist invasion and influence.
Bakunin believed that state is to be abolished. After overthrowing capitalism, people would simply organize themselves in self-governing communes without any state.
Marx said that state is crucial for survival of communes.
Bakunin said that state would just turn into oppressive dictatorship.
Eventually, it was the Marx's wish that came into existence through revolution in Russia, China, Korea...ect.
After the revolutions and establishment of the communist state, Communist societies became something more than societies of communes. They became militarist societies, with arms race and Korea giving birth to Songun politics.
The communes still play a role in China and Vietnam, where some buisnesses are ran by communes.
The Bakunin's version of Communism, the self-governing communes without the state, didnt become reality. However, there were and there still are plenty of communes around the world that seem to be working fine.