I was in Boro at the start and the end of the season, didn't see anything new going up near the Gondola or the Rila ... so I'm guessing that if there are new hotels, then they may be a bit of a walk away like Zodiac and Kalina are.
Hey we booked for January as soon as we came back this year and can wait!
We stayed in the Hotel Lion and it was lovely they put transport on every 20 mins there and back up to 6.30pm well worth it.....
anyway good luck and have a fab time.
xxx