I understand it varies from city to city.

The quality of available tenant varies drastically depending on the neighborhood.

Notices, eviction laws, tenant rights and landlord rights vary by state, with some county or city overlays. 

@Mordechai ChaimovitzGreat points made above along with what @Daniel C. said referencing @Tom Shallcross's post on another thread.The context and variables for each individual investor will vary but many people are comfortable with getting a 2-4 unit that will reduce their out of pocket expense compared to their previous rent with the intent to do rehab and raise rents over time.

I invest in Boise, ID and do quite a few BRRRRs, LTRs and STRs- varying degrees of success depending on how much equity we can force and the type of back end financing we can find, but the tax benefits are great and it's a rapidly growing market and Idaho is probably the most landlord friendly state in the nation. 

The property is located in a mid-size city with several attractions nearby.I understand that management fees can vary by location, but this property management company charges 20%.

The cost to buy a laundromat can vary widely depending on the size, location, condition of the equipment, and goodwill.

Once you do that get several bids...bids will vary considerably.  

Add to that we have Bethel School of Supernatural Ministry with students (ages vary from 18 to seniors) numbering a few thousand, with no dorm space, and investors have purchased homes and rent room space to them.

It varies a lot and depends on the vintage of the property and your tenant base.