Not sure what could entail post creators to be in a fantasy world.
I would give this advice for Amelia. If you experience problems as such, I would suggest booking apartment for 2 nights each and changing hotels, locations every week. To rent apartment could be good but also it will require you to pay upfront 6 months if you do not have a proof of income. So I would suggest work in hotels for next 4months, save money and then find a good area which can work for you.
Regarding hotels, the bigger, the better hotel, the more discreet they are. Don't book 2* hotels as you could face the same problems. That's god that you have other work, and your work hours are from 1pm because most hotels have check in from 2-3pm. I would strongly suggest not to try to work after 11pm if you face problems with reception.
Most of areas are good in London, look around 2-3 zone of London and try to work there, changing locations, after couple of months you will see which areas work better for you, which is worse. Try to look in locations near underground stations or overground, but you can avoid train stations as they can be a bit more dead. But currently have in mind that most people do not work from city of London, they work from home, so zone 2-3 can be very good too. Forest gate might not be bad location, but try others in east like Canning town, poplar. South such as New cross or Greenwich, Sotckwell, Balham, Brixton. SW/West such as Wimbledon, Clapham junction, white city, Bayswater. Or north like Finsbury park, stoke newington, Archway. Try these areas the next few months, see which works the best for you. Save up for deposit, then think about how safe you will feel having your own apartment. When looking to apartment look into block of flats, they are more discreet.