It is a fair cost benefit, however there are 3 points that deserver more attention from the host:
1-	The room seems clean, but there was plenty of dust under the bed
2-	There was no space at the fridge for anything and also the cleaning conditions of the refrigerator were not very good
3-	There is another room available for rent, and this can be a problem. There was one night whith new guests arrived during the night, making a lot of noise, that I couldn’t sleep.
The shower in the room is a plus point.
I will try another place next time I'm in London.