I would assume since carpet is stain resistant and low-porous that it may be difficult to stain.  

That is the first thing that college students look to for housing.As far as the property itself, my suggestion would be to install wear resistant materials as units turn because with students you get more wear and tear than normal tenants.

So far I've resisted the urge to "do something because I can" and, instead, accept Jay Leno's advice: "You have to smart enough to know when you've already won the lottery." 

I’m entirely too busy to have this much resistance to basic loan document requests.

If you can then this will ensure a good, very water resistant, repair.

Old owner told them, they should pay for that, but they are making a lot of noise and resistance.

It is often water resistant and I have seen at restaurants bath rooms as well. 

You have to resist the temptation to buy in marginal areas just to get something.

I couldn't resist the curiosity and purchased the detail report, something came up was:1) there was a traffic Minor Offenses (turned out to be true after verifying the country record)2) a couple of dismissed bankruptcy filing around 2008~2009, (not sure where to check on this). 

My goal is to flip it and if everything goes as planned I will see a 30k profit according to my calculations.My resistance is that there is an ugly house two doors down that is abandoned and doesn’t have a window on the top level.