A couple of years ago there was an excellent long article on BP about all the things to look for and ask when interviewing property managers. 

My experiences were a couple of years ago and I was originally told the appraisal had been assigned and the rate would be $780 but then later I was told that appraiser was cancelled and they'd found someone else who it was assigned it for $935.

Right after I closed on that one the insurance company demanded I make a couple thousand dollars of repairs.

Quote from @Shayan Sameer: I would reach out to a couple lenders see if you can get some competitive rates and also see about the points too that they are charging..

I have attended local meetups so that I can have a handful of experienced folks who have resources to share.  

There is a catch - the couple wants to 1031 the funds into their sons next larger project which is TBD.

Just an extra couple of clicks to do.

For example, I've had a couple of 3+ bedrooms sit for a longer period of time because they only had one parking space available (and no on-street options nearby).

Alternatively, your in-laws could partially gift the property by using the annual gift tax exclusion ($34K per couple annually), lowering the sale price and their taxable gain.

We have been talking about investing in real estate for a couple of years.