dǎ rǎo
工作时间，请勿打扰。
gōngzuò shíjiān, qǐng wù dǎrǎo.
Working hours, please do not disturb.
在府上打扰多日，非常感谢！
zài fǔshàng dǎrǎo duō rì, fēicháng gǎnxiè!
Thank you very much for the hospitality during my stay at your residence for many days!