In an ordinary hotel, minimum rent for a night is about $40 for single person. For two persons they charge only $60. They also provide free internet and parking.
In addition to this, they also provide cab service and free breakfast with reasonable items. Besides that, they also provide snacks for some extra charges.
While walking through central area of city, you can explore multi cultures, fashion trending and modern life. There are small coffee shops and cafes on each side of road.
It only takes $3 to buy a coffee with some snack and you can enjoy it in a pleasant, open air environment. London is a nice place to visit especially in summer season.