雨夢樓romaji
"Yumero" or "Yumerou" would be the romaji for "雨夢樓". The term "雨夢樓" can be broken down as follows: "雨" (ame/yū) meaning "rain", "夢" (yume) meaning "dream", and "樓" (rō) meaning "tower" or "building". The romaji "Yumero" or "Yumerou" captures the phonetic essence of the term in Japanese.