After comparing a few 3d modelling software, i decided to use sketchup to design my apartment.
the Application is Simple to use for beginner, easy to learn, and has thousands of 3d model library.
doesn’t support lighting and shadow, but there are 3rd party plugins that enable this feature.(irendering)
I am very satisfied using sketchup, now i am able to generate a 3d rendering similar to those interior designers created