The location is very good if you are searching for lots of nightlife, restaurants and not to far from the airport. The hotel is located in "student city" of Sofia, and you will find lots and lots of young people running around in the area, either it is in daytime or during evening, you will not feel deserted!
The hotel itself is a OK 4-stars standard, with spacious rooms, 24-h fitness room and free wifi (in Bulgaria you have free Wifi everywhere!) and 24-h reception. The minibar is stocked with some basic drinks/snacks, but you are not there for the minibar when you have at least 10 bars/restaurants within 100 meter radius. Me and my wife were satisfied with the hotel, and they have good facilities for business travelers also.
Toilet is modern, clean and spacious. And you have to go to the restaurant at 12 floor to see the view of Sofia from above. The only thing we don't recommend is paying 12 EUR/person for breakfast, since you can easily can cross the streets to have a big local breakfast for half the price or less.