We stayed in a junior suite which was perfect for three people - a very large king bed in one room and a large pullout sofa in the other (very large) room. We had two full bathrooms which was unique for a junior suite. The rooms are ultra-modern (almost to a fault - who puts a bathtub in the middle of the room?). The only bad side was a very strong sewer smell from the bathroom the first night - if the toilet wasn't flushed every ~hour or so, the water would turn brownish and smell horrible. So we spent the first day flushing the toilet a lot. I told the front desk the following day and I have no idea what they did but they immediately fixed the problem. Another small issue - the pools are beautiful, but to use the hot tub involves a fairly substantial spa charge - would have been nice to have that included.
The included breakfast was very good and quite extensive, and the restaurant had great food and a beautiful view of the Atlantic. In the morning I had a great run down the boardwalk out to the San Sebastian Castle - an incredible way to start the day!
So overall great, except for that weird toilet issue which was fixed immediately after I let them know. I'd definitely recommend the Parador at Cadiz.