Wow! This is quite a hard question!
I believe that most of people likes her. It´s difficult to say, because Spain isn´t really a monarchist country. In fact, many Spanish people would tell you that they are
juancarlistas rather than monarchist- please, tell me the difference

.
And when you talk about the royal family with somebody, it´s totally different to the forums...most of Spanish people doesn´t care how Letizia dresses, or what she does all the time, or how she looks in an official event, or even her past... For us, the only important thingh is how she does her job and how she represents us, and at this point most of the people ( the normal people of the street) like her. But, obviously, the Spanish press (which is really yellow) has a lot of influence, and they have spent five years trying to convince everybody that she can´t be queen. And, despite that, she´s now more popular than two years ago, that´s what I can tell you for sure.