I had the pleasure to visit this hotel for two nights in September 2019. The place seemed to be a typical one for tourists. It was full of that kind even in the early fall.
An upgrade would not harm but all in all the standard was all right.
The real advantage is the location so close to the beach. A coming back in summertime is realy tempting.
The old town of Terracina is fantastic with its buildings and monumets dating even from BC. Must be seen again in this life.