To offer your visitors a positive experience certain criteria must be respected: 

• Professional look - colors, logo and images that represent your company
• Reliable hosting where your website is stored on the Web
• What kind of website it is: E-commerce or Content management ?
• The Web content needs to be attractive and respond to your visitor's need
• Marketing - Are you easy to find on the internet
• Updates: does your website provide recent information and how easy is it to update ?