An interior and its products should reflect the homeowner and not the designer's idea of the owner of the site. It should be a reflection of your lifestyles and your own personal tastes; your designer's goal should to be advise and guide you through the process of using your space and your furnishing to their maximal advantage. The end result should be a home that speaks of you, not your interior designer.
Large spaces should not have walls lined with furniture, but rather they can be made more intimate if they contain two or more furniture groupings arranged to create an easy traffic flow. Let a variety of art and interesting wall hangings take care of furnishing your wall space.