My goal is to add verbiage within the lease that will decrease any tiffs between tenants for the common spaces and how to set expectations and promote group effort with cleaning the common areas/shoveling snow/personal dishes/shared fridge/laundry/having guests and so forth. 

Make sure everyone knows a cleaning schedule, expectation for common areas, how are you splitting utilities, guest policy, etc. 

If you warned them and they didn't clean things up that could be a reason. 10.

The deal was contingent upon 60 day due diligence and a clean Phase 1 environmental assessment.

My local Airbnb rep said the algo does consider cleaning fee too so try to be lower or even with your competition. 

All our data was well-organized and cleanly presented (no dropping off boxes of unorganized documents in their lap).  

I also find that depending on the tenant, my one Airbnb property has less wear and tear because it's constantly cleaned and maintained versus my other rentals where the families living there settle in and accumulate stuff - which makes it hard to deep clean regularly (to my liking) as well as just the constant daily wear and tear from kids etc. 

They'll likely have follow up questions about who handles maintenance, larger SD, etc... so be prepared to quickly answer these.Value to mention:- Professionally cleaned property after each stay and exterior upkeep- Staged photos that you can share with the owner for marketing purposes- Capex coverage up to $XX,000 (might need to include in SD)- Extra $XXX per month (likely may need to pay a little extra in rent to make it worthwhile, otherwise they can collect the same amount as LTR)Also, google "Airbnb apartments" or check their website. 

My figures are below.TaxDeed Winning Bid: $489.00 (My Bid May 2013)Property Clean-up: $450.00 (mowing, trash removal)Taxes & Insurance: $80.00 (2013 & 2014)Sale Advertising: $130.00 (Signage, Newspaper Ads, etc)Filings & Legal Fees: $245.00 (Deed, Lien Releases, Sales Agreement Docs)Total Costs: $1395 (approx)Sold for: $3250.00 (August 2014)That is better than the 25% I would have received if the property was redeemed during the redemption period.

Maybe you can add clear rules on noise, guests, shared space usage, cleaning responsibilities, maintenance expectations, and specific guidelines for shared bathrooms/kitchen.7.