Its not a complex website in terms of functions, just like a portfolio show-off.
Doesn’t even need FPS controls, just mouse clicks.
Pre-set locations/cameras
Object interactivity (Like in RPG games when u click on a road-sign or billboard, a message/picture appears.)
Auto play pre-set path on load/idle…maybe (like the island demo).
As long as you can live without shadow casting lights and don’t mind having a small Unity logo appear briefly at the beginning, you can do this with the free version.
Keep in mind people will have to download the Unity plugin to view it though - might be a turnoff to some if you’re using it as a portfolio site to attract attention.
If the website is dedicated to a particular use of 3D or is focused on an interactive system, it might make sense. Doesn’t mean it is going to be easy.