Both per diem pay and hourly wages come directly from the bill rate, so per diem pay is essentially just compensation that is not taxed. 

MY pay isn’t directly tied to whatever the compensation offered is.

Perhaps our taxes are high, but are rents are generally higher as well to compensate.   

This is because it takes time and effort to manage and you deserve compensation if self managing or will need to pay someone else if using a professional PM.Unrelated to your calculations, be sure you understand how the ADU will appraise. 

Also is important for her to check with her local CPA if her country has any form of taxation agreement with the US to avoid double taxation (or at least compensate the tax paid in the US in her local tax return).I hope I could help. 

Hire the best housekeepers in the city, and have a system to compensate them extra to handle specific issues when they arise.

This agreement should specify the duration of their stay (in this case, 3 days), any rent or compensation they will pay for this period, and the responsibilities of both parties during this time.3.

The 203k lender controls the process, calls the shots, and manages the paperwork, funds the loan, selects the 203k Consultant, etc.Contractor - any licensed, bonded, insured contractor is allowed to do the work, but that doesn't mean they know the different versions of the 203k , familiar with the unique 203k paperwork, processes, timelines, compensation structure, nuances, etc.

If the water bill is $100 a month, increase the price by 20% (or whatever you decide is fair) to compensate you for the time required to split and bill and to cover additional use when tenants squander the utility.

This could impact the reasonable compensation too since you will possibly have higher income in the S-Corp.