After some initial confusion with the address on the Airbnb listing being wrong, I had a fab time at Jane's place. It was a shame that there was no wifi, as I struggled to keep in touch with people back home, but it was a great excuse to head into town and sit at one of the lovely little restaurants in the harbour. The flat was very clean, comfortable and well furnished, with absolutely unbeatable views of the ocean - as everyone says here, well worth the climb up 4 flights of stairs!
I didn't have a car while I was in Simonstown, and it was only a 10-15 minute walk into the centre of town, although definitely not for the faint-hearted as it is up a fairly steep hill on the way back!
I cannot fault Jane's incredible hospitality, she was a fantastic host and I would stay here again in a heartbeat.