This a lovely place to stay, and it is perfect for solo travelers to London. It's right next to bus lines into the city center, and it's also near underground and overground stops as well. I felt very safe in the neighborhood, even as a women walking alone at night.
You do share bathrooms with other guests, but I had no problem with this. There are 4 available showers and toilets, and they are all immaculately clean. If you've ever spent any time as a student with communal bathrooms, you'll be pleasantly impressed.
Bonus: Julio is the nicest person to work with, and he has great recommendations. I would come again just to hang out with him and practice my spanish...