You really need a 2-bowl sink for washing dishes. 

When steam boilers are replaced, contaminants very often are washed down into the new boiler after it begins to operate.

I would acid wash it to clean it up and seal it with a low luster stone sealer.

I rooted out a wash cloth once, and evicted them, but they were month to month.

I also delved into the city's local commission website and took note of various building permits and there seems to be an eminent number of plans (car washes, restaurants, parks, etc.) in the plans around different areas of the city that I'm sure will also contribute to the population and demand; not to mention, there are major resident-attracting plans in the books! 

Make sure any clothes and shoes you wear get washed immediately when you go home, and take a shower.  

Otherwise you are not obligated to furnish a washing machine to her specifications.

Realistically, it's a wash for buyers and a bit of a loss for sellers.

Or, do you try those chemical solvents that you lay on the caulk?

The reason for doing this is when water is free (or included in the rent) they invite their families to do the wash, or they have a tendency to wash their vehicles whenever they want.