^^ It's always a good time for more TOS observations.
Either Janice and Spock had the same cabin in TOS and the corridor outside underwent reconstruction (same applies for Kirk's cabin in "The Conscience of the King" versus his cabin in "Journey to Babel") or the first number simply indicates what kind of class the cabin is.
Because Garrovick held the rank of ensign, I've always wondered why he enjoyed the luxury of the typical officers cabin.
However, if he only had the third class cabin # 41 ("341") I could better live with that.
If I'm not mistaken, isn't this the first time in Season Two where the cabin's door sign only has a name
but no numbers?
Same applies for Kirk's cabin in "The Mark of Gideon" and Uhura's in "Elaan of Troyius".
The one thing that still puzzles my mind is the "Personnel Records" door sign next to Kirk's bedroom in "The Mark of Gideon".
Did they decide to put the personnel records under Kirk's mattress after the Nomad Incident?