(I've yet to take a look at the property to confirm.)ARV Comps:https://www.redfin.com/PA/Philadelphia/1012-S-24th-St-19146/...https://www.redfin.com/PA/Philadelphia/1709-Christian-St-191...https://www.redfin.com/PA/Philadelphia/1525-Christian-St-191...Rental Comps: For gross rent determination I'm assuming room configuration to be 3 bed 1 bath for two units and a 2 bed 1 bath for the last (furnished unit).

Assuming the property is equally owned 4 ways (25% each) you could have the property appraised for confirmation of value: $1.8M/4 = $450k/share x 3 = $1.35M could be obtained as a cash out refinance, potentially utilizing a healthy portion of the STR or projected STR income to qualify. 

Does anyone have any feedback on SimplifyEm property management software?

A title report would be necessary to confirm whether or not there is anything preventing a current sale by the owner of record.

They finally confirmed they were sending me a check after three weeks and then it arrived in the mail on July 1st.

I can see the use of software and individual coaching. 

It was clear to both parties, with email exchanges confirming that the end date is July 15th and that there will not be renewal of lease.However, I forgot to stop the automatic rent collection through Zillow, resulting in the tenant paying the full July rent on July 10th, which has already been transferred to my bank account.

Where does one go to find a list of motivated sellers other than paid services like PropStream and other software?

Each software I look into claims to have all three attributes (property, bookkeeping, project).

Does anyone have recommendations on accounting software to best serve STR owners.