The Grammy-winning singer has also booked out all the executive suites and the executive double rooms for the sizeable entourage who will be accompanying her here from tomorrow until March 13.
The famous mum-of-one will have access to the finest services at the five-star hotel, including her own 24-hour butler who will ensure everything is perfect for her stay.
It's not yet known if hubbie Jay Z will be coming to Dublin with her, but her daughter has accompanied her on her Mrs Carter Show World Tour.
No stranger to the St Stephen's Green hotel, which boasts its own Michelin-starred restaurant, Beyonce (inset) has previously stayed in the city centre venue.
Able to cater to her every whim, she chose it for its handy location in the heart of the city as well as its luxurious facilities and discreet staff.
And naturally she'll be availing of the best room in the house, namely the Penthouse suite, which costs €2,750 a night.
Covering an area of 2,000 sq ft and boasting stunning views over the city, it comes complete with deep shag pile rugs and acacia wooden floors.
She'll be enjoying its fine Italian furniture as well as a giant hideaway TV, a second bed in the study area and a gorgeous limestone bath.
Before she arrives tomorrow, they'll even stock the penthouse with her favourite music, movies, wine and snacks.
She'll be able to enjoy Kevin Thornton's finest cuisine in the comfort of her suite and have a masseuse give her a treatment to help her unwind after her concerts.
Best of all, the hotel has direct access to an underground carpark which means that Beyonce and her sizeable entourage will be able to leave and enter the venue discreetly.
"The hotel is perfect for a star like her as it's nearly impossible for the paparazzi to get a pic of her. There's literally nothing left to chance and they're well used to accommodating A-list stars," said a source.
Tomorrow night she will take to the O2 stage for the first of four sell-out dates.