Newsflash: Inherited house as rental, with mortgage?

I have inherited my mom’s house, which is in a very robust real estate market. Both rental and purchase prices are crazy & have been for several years, and we wouldn’t have any trouble selling or renting at a fair market price. I was planning to sell but I’m entertaining the idea of keeping it as a rental for at least a few years, if not indefinitely.Pros: house is in great shape & in a desirable neighborhood (which does allow renting – there are several rented currently but it’s mostly owner occupied). Once we get it cleaned out it’s ready to show either as a rental or for sale.Cons: it would have a mortgage which would cut into any profit. My mom had a reverse mortgage on a little over half its value. We could afford the payment if it sat empty but it would be very tight. Basically the only way it would work out financially is if it were rented 90% of the time.Questions: is it realistic to expect it to stay rented 90% of the time? The goal wouldn’t be to make a fortune on it, but enough to make sure it pays for itself including maintenance while we sit on a valuable piece of property until we decide it’s a good time to cash out. There is also some emotion involved – it would feel nice to keep her house, but I know emotion shouldn’t interfere with this decision. Other questions: what is “breaking even” in this circumstance? Enough to cover the mortgage obviously but how much above that is enough to cover maintenance? I’d like to have banked enough set aside to also cover a couple months of vacancy after the first year, so I’d hope we wouldn’t be spending the full amount set aside for maintenance every month.Edited to add #s: by my calculations we’d end up with ~ $500 left from the rent payment every month after mortgage, hoa, & management company fee, $670 if we handled it ourselves but I’d prefer to use a management company. Also, it’s only a few miles from our house and we can do very basic maintenance ourselves but only basic stuff.What else am I not thinking of? Is this a stupid idea financially?