Remember when booking the presidential suite was as good as it got? Now, thanks to Airbnb and some adventurous celebrities who are willing to forgo room service and a concierge, vacationing like the stars has never been easier. (Note: "Easier" is not synonymous with "cheaper" — you may still need to splash out your life savings to afford the experience.)But oh, what an experience it will be. Swim in an infinity pool like Gwyneth Paltrow in Mexico . Be on top of the world like Beyoncé and Justin Bieber in San Francisco. Make the most of Malibu like Selena Gomez . Why settle for free Wi-Fi and a king-size bed when you can indulge in private gyms, outdoor dining rooms, orchards, and Egyptian cotton linens?Read on to see seven real Airbnbs that these mega-stars have stayed in — and then book one for yourself.