This summer, indulge in some of the most spacious luxury hotel rooms in cities like Berlin, Stockholm and Lisbon, and even far-flung spots such as Pafos in Cyprus. At the time of booking, guests can upgrade to a bigger and better room at a discounted rate based on availability. The list of participating hotels includes boutique townhouse Number Sixteen in London and The Emperor in Beijing.

Individual hotel rates vary; book for a minimum of two nights. Go to the website for more information.