Seville hotel recommendations.

Hello, We will be staying in Seville for 3 nights and are looking for some hotel recommendations.
We would like to be walking distance to central Seville, close to most sights, Looking for something with some charm.
I don't want a boxy modern hotel. Between $200-$300 a night. I would spend more if it's special. We will be working, so need a hotel that has a desk in the room to work form.

Thank you!