It depends on the work you're doing. I would much prefer to sit where I can see out a window or two rather than staring at a blank wall. And, where the desk is now, you'll have a problem with reflections from the 2 windows behind you.

You have about 3 feet between the windows. I'd much rather sit and work at a deep 3-foot-wide desk with a view to the outdoors than what is proposed now. I can work fine at a narrow desk, but mine is also deep--34". I use a 15" laptop against the wall (on a riser that brings it up a few inches), with a wireless keyboard and mouse. Plenty of room. If a laptop screen's not big enough, hang a monitor on the wall above it; then you get the bonus of being able to extend your work to 2 monitors. I use a full HD 32" TV as my 2nd monitor, with shelves above.

And when I'm not using the KB and mouse, they slide right under the riser, and the desk is clear.

If you have lots of papers to deal with, that might not be ideal.

Will you be working on a laptop or desktop computer? How many monitors are needed? (My husband has 3 monitors for his home office, which is why I ask). Do you want a TV in there somewhere? Do you have kids or plan to have kids? How many people will need to work in here at once? The current design looks a little choppy to me with the lower window seats and the higher countertops between them