Troubles with running a multi as extended stay vs apartments

[Wes Harrington]

I am looking in to an 11 unit multi in our area.  I am relatively new to investing in larger multi's.  The owner is willing to finance and the property is currently set up as an extended stay.  Now I know rates can be a little higher when run like this and appear a bit more attractive up front, but what are some of the downsides or experiences you may have had in a situation like this?  The town is a steadily growing one, but there are lots of temp construction-type workers that visit the area.  

Also, any help with looking how to run the numbers on something like this would be greatly appreciated.   I feel this is a topic that I dont know what I dont know even when it comes to asking questions on the forum.  Love to hear your input!

thanks