The card provider regularly sends me offers of 0% APR for 18-21 mos.

I'm sure it's in the terms of service that we all click "accept" without thoroughly reading but know that what you post here might be read by a tenant.

There are services that charge a hefty fee for this, but can often be well worth it if the tenant stays and takes care of the place.Best of luck!

In certain cities, it is very expensive for water service and some charge every month even if the usage is zero.

The 50% rule is related to expenses, which does not include debt service, so your down payment won't affect that.If you're not planning to live in the property, you will have to put down at least 20-25%.

Can I sign a regular tenant lease with them, or do I need a roommate specific type of lease?

I need suggestions on what type of companies I should be looking into for these types of services or what type of searches I should be conducting to find companies that do these all in one services.

Tenant paid me electronically using one of the major online services.

I am regularly adjusting what the workers are doing because they clearly are not fully capable.

I got a bid for $2000 for the service.