Not actually stayed there but the hotel is nice and central. Dead easy to access all the bars and restaurants and linked by underground walkways to nearby hotels. You'll have a great time. Easy to hop on the bus to get to piste as it starts outside the Snezhanka so you're at the right end of town.
Perelik is very central and has been the hub for nightlife ever since the resort opened. Very popular and always a buzz around the place but is in need of a make-over. Food is OK if not brilliant but you wont starve. You will be pleased with your choice I'm sure and I have stayed there at least 10 times.