Have tried to arrange a taxi through bulgariaski from the airport to Boro on Saturday, but had no response after the initial enquiry. Heard that others have had a similar experience.
No need to worry.
A taxi from the airport to Borovets is about 35 to 40 Euro. Take the cheapest one, you can read the price per kilometer on a sighn in the back or front of the taxi. A fair price is 0,49 stotinki per km (0,30 eurocent).
Enjoy your holiday.
Roland