You can check on map where to sleep, where to shopping or eating. You find an interactive tube map of London to get around without problems.
Restaurants, shops and hotels are sorted by proximity, if you have gps on device, you don't get lost anymore. If you don't have it, don't worry, check detailed map on the app.
London MiniGuide is your guide if you are planning some days in the city center. Go to England and enjoy!