Anna is, as what the other reviewers have commented, loving, caring and attentive. She will do whatever she can to offer a comfortable experience for her lodgers. For example, whilst I was staying in the room, she changed a new airbed which is really comfortable for me. She is a very relaxing person, too. There is no pressure staying with her in the house, and you can do whatever you like as long as you follow the rules in the house.
As for facilities, you have everything you need in the house - a small desk for you to work in your room, kitchen with plates,utensils, cooking pots, and a large and beautiful bathroom and more. She also has a nice garden that you can use.
For transportation, her house is around 10-15 minutes to the Seven Sisters tube station. Alternatively, you can take a bus (the bus stop is 3-minute walk from the house) to Turnpike Lane tube station. You can then take the bus number 230 for about 5-10 minutes to get back home. It's very easy to go to Central London and particularly both stations are close to King's Cross St Pancreas station. I was taking a short course at Central Saint Martins and I found it very easy for me to go to school.
All in all, Anna's place is a nice option for you to pick from and I would like to recommend it to my friends if they are coming to London.