I have a mix of MTRs, STRs, and a room rental and I can perform all the needed property management and bookkeeping features on the site. 

To really make a good informed decision you'll want to look at all of the metrics of your properties performance. 

I self perform most of my construction at this point and find it very difficult to make ground up construction pencil in Philadelphia unless I am selling for $400/ft.

I removed the chimney and added modern HVAC, making it the only house on the block with it, significantly enhancing its value.

Your name and credit would stay with the existing note, which you would keep paying on - ideally yourself with money you receive from the "buyer", because if they don't pay your credit is wrecked and your house is in foreclosure.If you search on here you'll see everyone and their brother looking to do Subto and it's a nightmare unless the buyer has the funds to pay the note off if/when the original lender figures out you don't occupy the property any more and are attempting to do what you want to do, since most loans are going to specify that performance.  

Predictions are for fools; numbers are for performers.

Some packages genuinely improve property performance, while others might feel excessive.

I removed the chimney and added modern HVAC, making it the only house on the block with it, significantly enhancing its value.

The only think I hear about hers is it is difficult to have work performed on it by a contractor.

I recommend people only sell if (a) you can invest the capital in something that performs better, or (b) it aligns with your goals.