It's not uncommon, I'm actually helping a client clean up the mess from a very similar, handshake agreement. 

I know of a realtor or two who will informally watch over a client's house and at least one house-cleaner who would clean between stays, but that's about all I have.  

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Here is what I proposed:Setup fees : Administration Setup:One Time Fee: $400Guidebook: Using professional photos give the guests a professional tour of the house and how the home works (Wifi passwords // How to use grill // How to use propane fireplace // Hot tub instructions // Sauna instructions //Check in and check out instructions //where extras may be storedOTA (Online Travel Agency) setups: taking professional photos and actively updating your listing on popular platforms;PMS (Property Management System) Setup Smart Pricing Set upWebsite integrationOther (furniture arrangement / design / décor shopping and set up) $50 per hour· Placement fees · Marketing Cost: Variable depending on needs/wants for marketingFacebook AdsGoogle Ads Cleaners: Set up procedures/take pics of expectations· Management fee—30%Guest communicationCleaner communicationSetting Rental rateDealing with small maintenance issuesBooking CoordinationSmart Lock integrationKeeping supplies stocked (TP, paper towel, all cleaning products, coffee, filters, creamer, sugars, teas,)(Receipts would be submitted on a monthly basis for either reimbursement or book keeping purposes)Encouraging guests to leave good reviews by periodically checking in, providing a review template, and ensuring guests receive the amenities they are looking forContinued marketingMajor Maintenance fees—OwnerCleaning and laundry services fees: Cleaning fee to the guest depending on how cleaner wants to charge

Home is also kind of mess ..with weed smoking in the house and dog poo in backyard not cleaning up after and so forth.How to proceed here ?

What length of time were you expecting an applicant to have a clean record for?

Unless you're on the beach, i'd avoid the flip flops and board shorts, but Also I think most people get defenisve or put off by suits when they are knocking on someones door, so Business Casual, collard shirt if that is something you'd wear or a Clean- Non Graphic T (unless you had your own made), clean cut dark denim jeans -- and some clean shoes. 

In theory you could also recover 1/6th of the CAM costs, too, but in my very limited experience with mixed use, the first floor commercial could very well push back on that, since they very well may not be utilizing almost any of the common area, depending on building layout.CAM would come from any number of places, commonly:Cleaning and utilities for any common lobby.Window cleaning for the buildingParking lot maintenanceLandscapingCommon HVAC maintenance, i.e. if a single furnace heats multiple spacesUltimately, you will want to be talking with either a commercial leasing agent or an attorney that specializes on commercial leases.One thing to note, while NNN leases are generally great, there is certainly work for you on a semi consistent basis, in creating the monthly escrow amounts and annual reconciliation.  

No cleaning, no calls, nothing.

If you have a clean, properly marketed unit you can get an approved section 8 tenant within 7-10 days.