Urgent Short term accommodation in London needed?

Are there any short term accommodation in or near the areas of Shroeditch or Bricklane I could consider? I will be staying there from a day to 7 to a month depending on pricing. I can't afford hotels and hostels are pretty grim in central london. I have chaecked gumtree and two where fake and one didn't reply!! So are there any modern and clean accommodation that I could stay this week for 1,7 or a month. at around �120 per week. thank you