My family and I went to the Wizz Air London Office to inquire regarding modifying our flight. The staff made us feel welcome and were really helpful.  After hearing about our predicament, they nicely identified the appropriate course of action.  We didn't feel hurried at all because the office was tidy and well-organized.  The woman who assisted us was kind and provided thorough explanations.  It was pleasant to talk to someone in person and receive prompt responses.  The visit was well received by my entire family.  Without a doubt, we'll return there if we ever need assistance.