I have stayed in the studio for one month and this was an amazing experience.
Regarding the room, it is cozy, well decorated, and a really good option for those who are traveling alone or with one more person. The size of the room actually fits for one or 2 people. It has an amazing bed to sleep in, a good working wi-fi, a desk, a microwave, a little fridge, a hairdryer, an iron, a wardrobe to keep the clothes among other stuff.
The place is very well located since is very near Earl's Court Station, a lot of cafes, markets, commerce in general, restaurants - especially from The Little French Restaurant, Steve and Lilly's restaurant, which serves excellent food, with a very decent price, and the staff are very attentive and friendly.
Concerning the hosts, they were perfect since the beginning of our first contact. Everything I needed to know they would answer promptly, they really helped me in every way they could, with the booking in the Airbnb site, providing all the information, and also being patient when I had to check in separately from my boyfriend due to problems with the flight. They were very caring, attentive and I would definitely return to their studio when in London again. I had a great time by living in there and I could not ask for a better staying or a better host! Thank you all very much!!!