The most important feature of bitcoin is that it is decentralized and is not controlled by a single authority all the machines work together and if one network goes down for any reason the money does not stop instead it keeps on flowing.
Bitcoin is easy to set up and banks help you to open a bank account and you can set a bitcoin address in a matter of seconds where no one will ask you any kind of questions or do documentation and you never have to pay any fees for it as well.
Bitcoin is anonymous as users can be the owner of multiple bitcoin addresses and they do not have to mention their names, addresses or any information related to their personality.
Even though it is anonymous, bitcoin stores information and details of all the transactions done under the blockchain which tells all of it. If you use bitcoin in public anyone can tell the number of bitcoins in that address. They just will not know if it is yours.