Nicky and/or Alexander - S5-E11
Other mistake: When Becky first names the twins before leaving the kitchen, Alexander has the peach booties and Nicky has the mint green. When Jesse takes them off and goes to put them back on, he switches these colors, making Alexander mint green and Nicky peach. The next morning, Jesse ends up switching them back to the original, making the baby's identities correct. Later in the episode when he does the foot print and discovers who is who, Alexander is wearing the mint green booties and Nicky was wearing the peach, which was not what the original colors were. So they either still mixed up the babies, or he "changed" the booties other times not shown in the episode.
Chosen answer: There are 4. The big room that DJ and Stephanie used with the big bay window. Next to that (closer to the main/front staircase) was the father's room (rarely seen). Across the hall were the rooms used Uncle Jesse (in the beginning of the show) and Michelle's baby room.
shortdanzr ★
But what about the 2 bedrooms in the attic?