Love this episode!!!
It is so well written and well acted. The guest actor who plays Antonio is also great. The episode contains a couple of classic scenes: Elaine in her nightgown retelling her drive to the airport is really Julia Louis-Dreyfuss at her best - enraged, almost psychotic Elaine Bennes who will have similar outbursts in many later episodes.
What is also interesting about this episode is the scene with George and Kramer in Antonio's apartment (also, great choice of hat for Costanza). Rarely did we have a chance to see these two together and they interacted perfectly. The ending (which is also season finale) is so typically Seinfeld: George and Elaine stuck doing depressing and tedious chores, while Jerry just looks on. Good job!