Translating the last verse of “Si maritau Rosa” into Chinese
sorry, don't have any ideas about the song. UR translation is very good, except “quarter”、“desire”. 
1、Quarter may mean “角落”、“世界”、“地盘” in this song, so "In my quarter" means "在我的世界，我的地盘，我的心里". 
2、Desire is a very strong, and true feeling at present，but“愿望” in Chinese is just a hope for future, and isn't strong as desire in English. so "desire" means "渴望、强烈的欲望，强烈的愿望"
3、my translation for your reference:
If people bring an atturna* In my quarter|他哼着小情歌闯入我的世界。
A desire is born in me|炽热的心开始按耐不住，
I can no longer sleep|（使我）不再入眠。
I quietly open The door, making a little slit|忐忑地打开一丝心扉。
I see it's for Annuzza，And go back to crying|而他，只是路过。