A group of related words which has both a subject and a predicate is called a clause.
It is ironic that Confucius's son died an early death. We can infer that the death of Confucius' son, Carp is ironic, he suffered an early death when the symbolism of the carp fish is longevity, because carps can get very old, it also represents the dragons due to big scales on the body of a carp. According to the meaning of the carp Confucius' son, Carp, should have a long live which did not happen.
I think the Shakespearean word for jealous is jea
The best revision would be “She met her friends at the hotel’s bottom floor, which is the lobby, so that they could head over to the swimming pool for a cool, brisk swim”.
Indeed, this sentence is grammatically and syntactically correct since it divides the utterance in smaller unites of meaning which are completely clear and unambiguous. Additionally, its construction is the classical subject plus predicate which further facilitates comprehension.