Just one.
There are 21 listed hotels within half a mile of the bridge of which 3 are within one third of a mile.
There are a number of different hotels local to this destination. These are depending on your needs, how much money you have and how many people are in your party. If you want the slightly cheaper option then maybe consider the Tower Bridge hotel or Burmondsey street. For somewhere possibly a bit more upmarket (or so some websites claim!) maybe consider London Bridge apartments. These are all within 15 minutes walk from London bridge.
The London Dungeon is next to London Bridge.
The Wizards Tower Is located near Draynor Village, West of the bank across the bridge.
HMS Belfast
Only occasionally.
It is famous because it is old and is in the center of London. It has a Victorian gothic style.
Tower Bridge is adjacent to the Tower of London and St Katherine's Dock (an upmarket marina). It is also close to the original City of London - which is now London's financial district.
Tower Bridge
A disused moat on three sides and the River Thames on the fourth side.
Yes it is. It's a naval museum moored near Tower Bridge.
Tower Bridge crosses the River Thames from north to south and vice versa near central London. It is adjacent to the Tower of London and is the only bridge across the Thames which can be raised to allow tall ships to pass under it.
London Bridge Underground Station. It's on the Northern Line, which is black on the map. And it's near London Bridge, not Tower Bridge.