We've used coin-op machines in the past, however depending on if you are renting A or C properties, there could be serious damage if tenants abuse the machines. 

I also assume total rehab to be $3000, thinking that I might need to buy dishwasher, refrigerator, washing and dryer machine for both units (one for myself and one for the rental unit).The rental rate for the other unit is assumed to be $1000/month.

I have an answering machine attached to my home phone and develop a message giving the basic information on the house up for rent (number of bedrooms, number of bathrooms, rent and security deposit requirements).Gail

Other than that you're talking ridiculous time with a coring machine. 

They are a few sheisty-sounding hype machines on there but the majority are knowledgeable folks.  

Obviously the Marriotts, Hiltons etc of the world have very powerful marketing machines and brand recognition which adds intrinsic value to the property (and they hold manager/franchise to high standards).

Better hire some machine gun toting 24 hour armed guards, then pay them off really well after it's done so they don't come back the day after its finished and gut the place to whatever they can on the black market.

So a 2 BR 2 BATH would pay twice the water usage of a 2 BR 1 BATH.You also need to take into account the common usages, like washing machines, car washes, lawn sprinklers.I would just pick a method that seems most fair and work out the flat fee from that.Curious, is there any advantage to charge a flat water fee of $25 instead of just increasing the rent by $25 and say water is included?

We have some units in a building we just bought that came with w/d, and we plan to get rid of those machines when the tenants vacate. 

In the units where they have an in-unit WD, this persuades them to not allow visitors to do a load of laundry in my machines (yes, I pay for machines too and this has been a good investment, as opposed to tenants providing their own).