If you want a perfect downtown London location, you cannot do better than Phyllis ‘ . It is two blocks from the Thames and a block from Trafalgar Square and a couple of blocks from Piccadilly Circus. The National Gallery , the National Portrait Gallery and St Martins in the Fields are all along the Square, and many other sites are easy to find.
Phyllis is a wonderful host - charming and knowledgeable. So much better than a hotel!