The aim of this Master's thesis is to understand public library users' perceptions of librarians' attitudes to users and professional knowledge. The purpose was also to investigate the relative importance to the user of pleasant or a knowledgeable librarian. As a theoretical framework we use theory from business economy where the experience of the user is in focus. Answers were sought to the following questions: How do users perceive librarians attitudes to users? How do users perceive librarians professional knowledge? How do users want to be treated by public librarians? What kind of knowledge should public librarians have, according to users? We interviewed twelve students in university education that are users of public libraries. Most of them say that they have been treated well by public librarians. In cases where they did not think so it was usually based on the policy of the library on not providing course books for the students. All of the informants say that librarians are in the service business and want librarians to carry out searches for them. The informants have a limited conception of public librarians' professional knowledge, although they say that they have never met an incompetent librarian. Nine of the twelve informants prefer a pleasant librarian to a knowledgeable one.