5 essential features of a website

The internet revolution is on and a lot of people are cashing in on it.The basic thing you need to follow the same trend is a website.But what kind of website?
A website can increase traffic and it can also turn away traffic. I have seen quite a lot of websites and depending on the nature of my work, I used a particular one. I liked a few websites and also disliked a few.So I decided to list 5 important features that could make a website successful

1. Genuine(unique) content/concept
2. Focussed area
3. Simplicity
4. Ease of access
5. Relevance