The interface is simple, easy to use for beginners as well as advanced users. It has very good support of all modern browsers like chrome, firefox etc. There are many features that can be used in this tool which make it more useful than others. I think its best feature is the live preview option where you see how your page will look when viewed by end user. So no need to worry about what changes you have made or not. Its free so there's nothing bad to say about it. Yes, i recommend using html5 editor if you want to create professional website with unique design. We were trying to build our own portfolio but we didn't know much about web designing. This was my first time so I had lot of doubts even after reading their documentation. But once I started working with them they solved every doubt I.
๏ปฟ