The location of the apartment was perfect for us; on the 55 bus line and a few minutes walk to Old street tube station.
You can hear cars outside pretty much all the time but that didn't prevent us to sleep soundly.
Wifi worked perfectly, as well as all the appliances, I just wish the small fridge had been able to cool off my drinks better :) (the size isn't really an issue)
Comfy beds, fluffy towels and a warm shower...all in all, a very nice apartment!