I'm very happy with my bedroom.
解析：当happy意思为满意的时,用be happy with/about sth句型,eg:Her teacher was happy with her progress 老师对她取得的进步感到满意;she doesn't feel happy about the salary she's been offered 她对给她的薪水感到不满意./I am happy at the news of his return 我听到他归来的消息感到高兴.