Nice place to stay with a club just down the street called Mojitos that’s perfect for 20 somethings on the weekend. From stansted airport you can take the train to Liverpool street station and then a 15 minute taxi ride to stow away Waterloo. You don’t have to download the stowaway app to use your pin codes to enter the bnb. The accommodations were very cozy and perfect for the two nights I was there as a solo traveler.