With its edgy architectural themes, dramatic panoramic views, and central location, the Doubletree - Tower of London is a convenient and stylish pick. This 583-room hotel offers sleek, minimalist design with perks like iMac TVs -- both a computer and a TV -- and free Wi-Fi. Beyond the sunny rooms, the most appealing feature here is the Skylounge, a rooftop bar with sweeping views over East London. There are other dining choices too, including the chic City Cafe or 24-hour room service. The nearby tube station is open daily, but some trains have limited service on weekends.