Is there a fee to unstake ETH?

Could you please clarify something for me? Is there a fee associated with the process of unstaking ETH? I've been reading about it and I'm trying to understand all the costs involved. It seems like an important aspect to consider, especially when planning my financial strategy in the crypto space. Could you break it down for me? Are there any specific fees that I should be aware of, or is the process relatively straightforward with no additional charges? Thank you for your help in clarifying this matter.