Figure out something fair and then give them 30 - 60 days notice - in writing - to prepare for the change. 

If an 79 individual’s disability or disability-related need is not 80 readily apparent to a housing accommodation, the housing 81 accommodation may request written documentation prepared by a 82 health care practitioner, as defined in s. 456.001, which 83 verifies that the individual has a disability or a disability 84 related need and has been under the practitioner’s care or 85 treatment for such disability or need, and the animal provides 86 support to alleviate one or more identified symptoms or effects 87 of the individual’s disability or disability-related need. 88 b. 

The idea is to collect rent every month automatically with Airbnb I find it to be more leg work in preparing the property every time a new guest comes and goes.

As far as tenant letting you in that's another situation. she could hold fast and not let you enter,, she could put door chain on.. or simply not be around and no issue..I don't think you have a good situation, your going to need to push the envelope on this one and download you state landlord tenant laws so your prepared for eviction action. 

Before you actually start getting quotes I’d recommend having a sit down with an architect to prepare some kind of preliminary drawings so you can bid off.

If you are ready to go from residential use to commercial use on your property and are ready to do the steps necessary to prepare your property for this use and to take on the extra liability, then there are ways to do so successfully.

I will make sure I am as prepared as possible with all of the info that I can provide.

Maybe the rents will be higher then you assume (tenants likely to leave, prepare for turnover)... maybe they are lower then what you think market value is (opportunity to add value managing the property)... maybe the landlord pays utilities and you'd like to sub-meter them out (will affect rent rates). 

Another way is estimate cost of rent and eviction proceedings and deduct from price .This is not a normal situation and it might be that the landlord is accepting rent in cash to avoid taxes.play hardball and prepare to say goodbye unless the above mentioned risks still make it a good deal 

.- Since it was tax time, where to get their tax returns prepared for free.- Sample copy of the lease.- Picture frame with screening criteria so everyone can read it.- Applications.Rather than tables, I just had a couple chairs and some clipboards.