I understood your instruction, in that it was a request for a price with extremely unclear directions (L shaped and adjoining block). I think it’s ridiculous to ask people from all over the country with different rates of pay and pricing structures to view a job where you can’t see all the work that is likely to be part of the job, nor can you see how dirty the job is and when it was last cleaned and you’re asking for a price.
If a customer approached me with those restrictions I wouldn’t even bother replying.