There are several factors that contribute to a good website :

1. Clear purpose and goals : A good website has a clear purpose and goals that are communicated to the user.
2. User-friendly design: A good website is well-designed and easy to navigate, with a clean and intuitive layout.
3. Relevant and high-quality content : A good website provides relevant and high-quality content that is valuable to the user.
4. Mobile-friendliness : A good website is responsive and works well on mobile devices.
5. Fast loading times : A good website loads quickly, with minimal delays.
6. Security : A good website is secure and protects the privacy of its users.
7. Accessibility : A good website is accessible to users with disabilities and meets web accessibility standards.
8. Search engine optimization (SEO) : A good website is optimized for search engines, which can help improve its visibility and ranking in search results.

By focusing on these factors, you can create a website that is useful, user-friendly, and effective at achieving your goals.