I'd have a look at the stuff the Eameses did (they did spaces and furniture and even a movie) before making a decision about any cropping. They used a rigid sort of geometry, but found elegant and balanced solutions.
Very NICE Guido . . . and welcome to UF. In my personal opinion . . . I'd like to point out that while this image is nice it seems a bit static. I think it could be much more dynamic if the shot wasn't cut in half, horizontally, in the middle. A bolder crop might help. Otherwise, the color, exposure and composition, in my opinion, are VERY good!