We had a wonderful time in London. Carolyn's flat was exactly as pictured. She and her husband were very helpful with check in, letting us in early as our flight got in in the morning. She also booked us a cab from Heathrow, which I recommend if there are a few people travelling. Not having to battle with luggage and unfamiliar trains after a 25 hour journey was a relief!
Excellent dinner to be had at Il Bordello (down the road in Wapping) and great service & food at Efes Turkish restaurant.
One thing to note is that this is an East London suburb, so some parts were a little "edgy" (as my mum put it), but it's so close to wonderful sights that we didn't mind!