It is usually frowned upon for any lady who is not family, nor palace staff, to be in the Prince's bedroom. 

Therefore, only knock on his door in the case of emergency, if you are feeling bold and daring or cannot wait to confess your undying love (just don't do this on the first day because he does not believe in love at first sight😉)

[Crown Prince Xavier Shreave's Bedroom - @Originaljaime]

On the other hand, the princess welcomes guests, gossip and mischief.

[Princess Seriena Shreave's Bedroom - @Originaljaime]

[Princess Rosie Shreave's Bedroom - @trishufflepuff25]