The place was immaculate! Clean, tidy, light. Soft towels, the bed linen smelled great and the all important wi-fi and TV was super. It had everything you would need for both a short and a long stay. The flat had the best shower and the flat was warm. Something you don't always get in London.
I slept on the sofabed, which was comfy. But it's definitely not for two adults because of a metalbar in the middle.
Our host Costa was great. He did a quick tour when we arrived and was always available from the moment we had a confirmed booking. A late check out was no problem as no one was checking in on the date we left.
The only negative thing I could think of would be that the bathroom light does not work for when you do your makeup. So to all the girls make sure you bring a mirror ;)
Would definitely recommend this place to anyone planning a visit. Great transports links, 'The Kennington' pub is a minute walk away with amazing food, and supermarket a 5min walk. Couldn't ask for more. Thank you Costa! Keep it up!