KeyBank receives reviews highlighting its friendly, attentive, and very professional staff. Customers report great and amazing customer service, with specific praise for the branch tellers. The experience of opening an account is described as easy. The bank is noted for having staff with a lot of banking experience, making it feel like an entirely new bank. While most feedback is positive, some occasional issues with online banking and rare encounters with less attentive service are mentioned. Overall, the service is characterized by professionalism and a willingness to help, leading to strong recommendations from clients.