Miranda's room is spacious, the bed is comfortable, there is ample storage space. The room has a large grated window which opens onto the sidewalk of a quiet street, provides lots of light and ample ventilation, but if you are an early or light sleeper this could be an issue as people walk right under it. (I had no trouble in that regard, but just mention it in case somebody is a light sleeper.)
The Oval tube station is 2 blocks away, bus stops just around the corner, convenience store half a block away, larger market a few blocks walk farther. There is a lovely big tub and shower combo in a large bathroom with one of those heated towel racks. There is access to stove,microwave, washing machine, and a lovely affectionate cat named Tizer. I could never get the adapter for 2 pronged US type appliances to work on my electronics, but Miranda has also provided a UsB adaptor so that was all I needed to keep phone and iPad functional.
Miranda herself is a good host, responds to questions via BnB email promptly, makes sure you are settled in with what you need,has house rules and reminders about specific protocols (like keep the toilet lid down and the Bathroom door left open so the cat doesn't and does have access, respectively.
I stayed for 10 days doing research and found it to be a perfect, economical alternative to staying in a more central location. I recommend miranda's room to anybody who doesn't mind a bit of tube or bus commuting to get downtown.