I am an architect and I have 6 years of 3D architectural visualization and design experience. I had designed and rendered dozens of offices so I am familiar how should a office interior look like, which means I can give you the proper lightning, materials and overall atmosphere. Please take a look at my portfolio to see my taste of design and render quality. Feel free to ask me anything.
While I design the offices, I never only put desks and say I finished it - like most of the so called design artist do! I pay additional care to how the atmosphere will look like, how the workers will feel in there, from where the light should come and how should the desk's layout be, where relaxing and leisure activity areas should be placed so that it cannot distract workers from the work but pleases them at the same time. And most importantly I add green elements carefully - not just plants there and there but green walls with in harmony of the architecture of the building, because no one wants to work and spend whole day in a dark, cold, concrete office... You should look at my portfolio to see how I achieve this atmosphere.
Also, I am fast at re-designing and adjusting the models, so if you are not sure how it will look and you may think to change the design within the process, I am the artist you should choose!