There were people last year who had been moved from the iglika to the samokov aswell due to overbooking. Havent stayed at the samokov but heard it was just a bit like the rila.
Can't give you a comparison with the Iglika cos I've not stayed there. The Samokov is OK but much prefer the Rila. All 3 are within 200m of each other, I think the Iglika is between the Samokov and the Rila.
Rila overlooks the slopes
The iglika is a much smaller hotel than the samokov and the rila. It is situated right behind the rila, so you can walk from the iglika through the rila and onto the slopes.