Flatness is hardless an issue for carpet, but vital for laminate, probably tile too.A smooth flat finish shows even minor imperfections.

Currently, I live in a 2 bedroom rent-stabilized apartment that has imperfections and it is not in a great neighborhood.

It'll show every little imperfection.

We'll flip 40 homes this year and list another 20-30 on the retail market.However, that means that we have 300-400 verified sellers that we drop the ball on every year because we can't pay what they need.My imperfect solution so far is two-fold:1. we have an in-house real estate agent that helps retails buyers & sellers2. lock up the wholesale deal and refer it to another wholesaler in the area to market.

If your town is too small to be covered by them, I'd just check occupancy rates for other AirBnB's (see what dates are blocked out, obviously this is imperfect and you'll only really be able to see July/Aug). 

We chose that over hardwood because of the following benefits:durable, waterproof and hides floor imperfections:  We then plan to do paint touch up and possibly new stove top and dishwasher.

I do intend to continue investing, albeit imperfectly.

It typically happens within the first year and is the result of imperfections in the glass.  

Also, you would not be painting the room with a flat paint, maybe a satin or semi-gloss, and hiding imperfections on reworked walls with a higher gloss paint is always a challenge.

There were some imperfections in the floor we did, but we weren't bothered by them as it's not a high end unit and we consider them to add character. =) Menard's recently started carrying an industrial concrete sealer so we went with that.