I’m sorry but you’ve definitely got a problem if you’ve tried to sell it twice before with no luck.
You are definitely going to have to reconsider the price very seriously in this case. I do know London and London prices so wouldn’t automatically assume overpriced. But if this is your third attempt at selling there has to be a price issue coupled with the small rooms and lack of outside space.
What exactly does your high service charge cover as you have no communal garden and the outside of the property is unkempt? I’m struggling to understand this for a property of your type?
Realistically it has to be marketed differently as a 3 bedroom with study. Or I hate to say 2 bedroom with study and box room. The sq footage simply doesn’t stack up as a 4 bedroom flat quirky or not.
My very decent 2 bed with garden was 85sq ft.
Think about everything rationally. What price did you pay for it. Why do you want to move. What do you want to move to. Who is your target market etc etc. in my eyes it’s a flat for a single person or a couple pre family with additional storage space. It needs to be marketed as such.
Then do the simple tweaks of wall mounted tv and out with dining table. Definitely clean up the outside front. Again why is there such a high service charge for the outside to be the mess it is?
The service charge is a worry for this type of property as I simply cannot see what you are paying for? Added to which whatever you are paying for isn’t actually being done ie weeds outside etc.
I think the kickers you are up against are
Small rooms especially sitting room and kitchen
Eves with restrictions
Lack of outside space
Service charge of £200 per month for what?
Plus what else is on the market locally at your price point as a direct comparison. As things stand and it’s your third attempt at selling you may well have to make some very tough decisions especially in view of current interest rates and you could not sell in previous years when rates were lower.