If the hookups are done with metal braided hoses the chance for a leak at that point  is very unlikely.If you use a Washing Machine Pan hooked up to a drain under the the WD, even if the machine leaks or over fills, the water will not be a problem and not flood the unit. 

PM has to pay for their time... owner does not want to pay for their time to go shopping and such... like James wise says its not a money maker for them .. but owners think they are getting hosed... its a lose lose as opposed to a win win :)

I don't expect tenants to fully absorb all that comes at them when leasing a unit; it's like drinking out of a fire hose. 

Not unless their intent is to hose you in the first place.....

They sit on the floor and have a hose that sits in the window.

While they were there, they did a couple things like clean a dryer duct and tighten a supply hose to the washer.

Maybe if you could convert the basement to a second unit but otherwise you would probably be better off to sell.A conversion of garage or basement could run $40,000 - $80,000 depending.What is the hose worth as it is and what is market rent for the area.

The tenants left a hose on the yard, I saw this morning it's gone.

And since its not in the original agreement, I'm probably hosed with trying to negotiate it through another means. 

I go up to get some water out of the hose and .................nothing  ( house is on a well ) .