Mark's penthouse guest suite is gorgeous and a perfect place to stay if you want to laze about on the rooftop garden watching the sunset or having all the best DC has to offer so close by! It's super clean and full of light. You're gonna want to consider your luggage choices because the metal spiral stair case that leads to the apartment (it's on the 4th floor) is very steep and narrow. I only had a backpack and a small tote and it was a challenge hiking those stairs and getting caught on the railing.