Vrbo is a great alternative.

Most of the popular/highly rated places don't seem to be accepting new clients.

(Unless this is already a thing and I'm just an idiot which is totally possible)Alternatively in regards to the requests for a calculator for a larger investment or alternative investments...I'm not sure if it would be possible but ROI-Muse is what I use for my bigger commercial deals and lease analysis, its fantastic...perhaps there is a way to work with them and get access to ROI-Muse through BP? 

Hello all, I'm considering installing electric heat pumps in some of my rentals as an alternative to gas boilers.

An alternative would be to do monthly rentals which would get away from all those crazy restrictions.  

That said, they are very popular, and gives the owner a valuable addition for your future guests to enjoy a pool when there is snow on the ground. 

Drive-to destinations are definitely going to continue being popular!

my STR in question is in a popular Ski town .Generally speaking, you'll get the highest cash flow from STRs, second highest from medium-term rentals and lowest from LTRs.

I just want to explain from a lender's standpoint why this might be above a lender's risk tolerance, so you can possibly find another alternative.

Rentometer and zillow are pretty popular.