I would assume they built it during the summer, when the sun is at a high angle, and didn't consider how it would be shaded during the rest of the year.

A neighbor has one very similar, which also faces the same way..
I will have to wait (its a short sale) and see, I hope.

I looked at the pictures on "Trulia". The sunroom doesn't help the looks of the house at all. And I assume these are the best pictures of the house interior? Wow!

My idea is to move the sunroom and replace it with a porch or portico with a Roman/Greek style roof...not cheap, I know.
I am also planning a carport attached to the garage in the same style ..I think, I may extend the house roof to cover the flat roofed addition..
My interior work is cut out....
This place sold for 54K less than 10 years ago, and then $150K in '08 !!!
Barnum and Bailey was an expression for this....

When I referred to the interior pictures, I meant that the rooms were so messy with "stuff" just laying around.

Clean, neat rooms would have made the total package look better.

Absolutely correct, monablair.
I have learned a lot from Home and Garden TV and having inspected many places.
The owner should be outraged, she needed a lot more time to straighten up.... I sense problems.
The camaera man was not so good either.
Real estate can be improved a lot, generally, but then so can many other things.