I haven't cruised her, but you have begun your research and know that it is small, by today's standards, Spanish owned ship, and though renovated, 20+ years old. I love the "classic" older ships but I know they are not everyone's taste.
I have to agree, I love the older ships, they have much more charm than the new modern ships of today. We took a cruise on a refurbished ship about 10 years ago and loved it. The refurbishing job is done so well, there are no tell tale signs that the ship is older, except for its charm and design. I would do it again in a heartbeat.
Under a hut, walking Eagle Beach, lunch on the beach, Amstel Bright Beer on the beach, coffee in the morning on the beach, taking a dip in the sea,
>>> "took a cruise on a refurbished ship"
----- I still look for one of the new ones. Took a cruise on a older one a few years ago and one of the turbines broke. The one port we took the cruise for was not reached because of the ship's slower speed.
They gave everyone $100 in ship board credit. Big deal!
They no doubt saved that much in fuel.