Perhaps something like this shade cabana would give you the privacy you desire.

What did you eventually decide on doing with the space? Feel free to upload some photos! :)

Rui, On the contrary, If you look from the left it should align with the base cabinet because they are in same size. Most likely, it will go off by 3/8 of an inch after the dish washer (as it has been wiggled in). It is too small a difference to be noticed by average person because they are at different heights. We are suggesting to change either the cabinet above sink or the single box above right of dishwasher. It will be easier and the filler will be least noticeable above the sink as the shutters are already of a different size. Good news, is that you may have the cabinet boxes already. You can check by placing them starting from the left most wall whether the above suggestion works for you. Thanks, Nitin Cornerstone Designs, Bangalore.

Dear Mr. Manjunath, It would be really better if you collect quotes from both online/offline professionals. When a turnkey project (Design + Execute) is assigned, overall costs remain low and would be better negotiable with the construction firm. For design only, it depends on the intricacy of work and the BUA of house. Normally, a site visit and a 2D/3D layout without approval assistance would come in between 2.50- 30 rupees per sqft of BUA depending on the firm's category. Regards, Aurum Ideas and Spaces Bhubaneswar