"My brother is sleeping in his room."
Translation:Ο αδελφός μου κοιμάται στο δωμάτιό του.
Normally, there should be two accents (Check out the "Double Accent Rule" in the Tips and Notes here: https://www.duolingo.com/skill/el/Possessives ). But as you might notice, several words that need two accents have only one, due to some mistakes made on the original sentences.
Now that the tree is locked for Beta, we cannot edit the main sentences, and we cannot change the best translations either, so δωμάτιο, with one accent, is still there and accepted for now. But it's on our to-fix list as soon as we get out of Beta. ^.^
In many languages spoken in Europe, there is room only for sleeping, which is called bedroom. However, if we are speaking about someone's room (f.e. when a child has a room, it is not a bedroom, because, yes of course they have a bed there and they sleep there, but also they have toys there, desk where they are doing homework etc.) So basically bedroom in this sense is only the room, where (usually) adults go to sleep and this room serves only for sleeping.
As I explained to you in this comment
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