Question: Which hotel in Las Vegas does Justin Timberlake host his annual benefit concert?
Context: Planet Hollywood Las Vegas (formerly Tally-Ho, King's Crown and Aladdin) is a hotel and casino located on the Las Vegas Strip in Paradise, Nevada.  It is owned and operated by Caesars Entertainment Corporation. "Don't Let Me Down" is a song recorded by British singer-songwriter Leona Lewis for her second studio album "Echo" (2009).  Lewis co-wrote the song with Mike Elizondo, James Fauntleroy, Justin Timberlake and Robin Tadross.  It was produced by The Y's and co-produced by Elizondo.  Lewis and Timberlake carried out the vocal production.  Having wanted to work with Timberlake for a long time, the collaboration came to be after he had asked Lewis to perform at a charity concert he was holding in Las Vegas in October 2008.  It was reported that they were going to cover Dolly Parton's song "I Will Always Love You" as a duet, however they worked together on new songs for "Echo" instead, and "Don't Let Me Down" was created.  Lewis revealed that her cover of "Run" inspired Timberlake. Blank-Fest is an annual benefit concert, usually held one-to-two weeks before Christmas, which raises blankets for the homeless.  It was founded in 1997 in Nyack, NY (a suburb approximately 20 miles outside of New York City) by Kenn Rowell who is the frontman for the NYC-based band, The Baghdaddios. Love Dealer is Esmée Denters' third single from her debut album "Outta Here".  The song was written by Denters, Justin Timberlake and production team StarGate in 2009.  StarGate produced the song together with Justin Timberlake, who also provided featured vocals.  On March 22, 2010, British radio station BBC Radio 1Xtra confirmed that "Love Dealer" would be Esmée Denters' next single off of "Outta Here".  It was, however, her first official single in the US.  The song was released in an attempt to help her break the US market with the help of Justin Timberlake.  Due to a lack of airplay in the United Kingdom the single failed to reach the UK Top 40.  It also failed to chart on the "Billboard" Hot 100. Celine in Las Vegas: Opening Night Live is a one-off American television special by the Canadian singer Celine Dion that was broadcast by CBS on 25 March 2003 and was recorded at the 4,000-seat Colosseum at Caesars Palace in Las Vegas, Nevada the very same day.  Hosted by Justin Timberlake, the special celebrated the Opening Night performance of Dion's first Las Vegas residency show "A New Day..." which initially ran for 3 years being extended for an additional 2 years in Las Vegas.  It was also promotion for Dion's studio album, "One Heart".  The special featured only 8 performances of songs from the original setlist of "A New Day...".  The special also featured backstage footage and a Behind the Scenes featurette at the making of "A New Day...". Robin Tadross (born August 8, 1980), professionally known as Rob Knox, Is an American record producer and songwriter.  He is best known for working with artists including Justin Timberlake, Lil Wayne, T.I. , Rihanna, Britney Spears and Chris Brown.  Knox has produced singles including "Dead and Gone" by T.I and Justin Timberlake and "Love Sex Magic" by Ciara and Justin Timberlake. "Dead and Gone" is a song by American hip hop recording artist T.I., featuring American singer-songwriter Justin Timberlake.  It was released as the eighth single from T.I.'s sixth studio album, "Paper Trail" (2008).  Due to the high number of digital downloads upon the album's release, the song debuted on the "Billboard" Hot 100 before its official single release.  The song marked the second collaboration between T.I. and Justin Timberlake, the first being the hit single "My Love", from Timberlake's second album, "FutureSex/LoveSounds" (2006).  T.I. and Timberlake performed this song at the 51st Grammy Awards.  The song was later nominated twice at the 52nd Grammy Awards, for Best Rap/Sung Collaboration and Best Rap Song.  It was the 10th bestselling digital single of 2009 in the United States.  As of 2012, it had sold 3.1 million copies in the country. Miracle on Broadway is an annual Christmas benefit concert by American recording artist Kelly Clarkson.  Presented by Live Nation, the first of a planned annual series of benefit concerts was held at the Bridgestone Arena in Nashville, Tennessee on December 20, 2014 and featured musicians Reba, Trisha Yearwood, Garth Brooks, Ronnie Dunn, Kacey Musgraves, Hayley Williams, Chad Gilbert, Charles Esten, Meghan Trainor, Martina McBride, Kix Brooks, and Deborah Allen performing renditions of various Christmas songs and tracks from Clarkson's Christmas album "Wrapped in Red" (2013).  The concert raised over US$500,000 ticket sales and donations for four charities based in Nashville: Monroe Carell Jr.  Children's Hospital at Vanderbilt, Monroe Harding Children’s Home, Second Harvest Food Bank, and Thistle Farms.  Clarkson had also announced plans to turn Miracle on Broadway into an annual benefit concert and planned to hold one in Bridgestone Arena on December 18, 2015.  However, this concert was cancelled due to Clarkson's health problems.  The 2016 concert was held on December 16, 2016. The AXIS (known as The AXIS powered by Monster for sponsorship purposes, also referred to as the AXIS Theater) is a mid-sized auditorium located at Planet Hollywood Las Vegas on the Las Vegas Strip.  The venue hosts a variety of events from charity benefits, concerts and award shows.  It is used frequently for the beauty pageants : Miss Universe, Miss America and Miss USA.  Since 2007, the auditorium has been the home to Justin Timberlake's annual concert to benefit the Shriners Hospitals for Children.  In 2011, it was voted as one of the "Best Concert Halls & Theaters In Las Vegas".  It is the largest theatre of its kind in the United States. The 20/20 Experience World Tour was the fifth concert tour by American singer-songwriter Justin Timberlake.  It was launched in support of his third and fourth studio albums, "The 20/20 Experience" (2013) and "The 20/20 Experience – 2 of 2" (2013).  The tour began on November 6, 2013 in New York City, and concluded on January 2, 2015 in Las Vegas.  The 20/20 Experience World Tour grossed $231.6 million from 134 shows becoming the second highest-grossing tour of 2014 and one of the highest-grossing tours of the decade.  This made Timberlake the highest-grossing solo touring artist of the year.  It is also Timberlake's most successful tour to date.
Answer: Planet Hollywood Las Vegas