I stayed at Nky's place for almost 4 months, and I highly recommend it.
In general, the house is very clean. At the ground floor, you can find the living room, the kitchen and the laundry, which are part of a very sunny openspace. The kitchen is equipped with cutlery, pots, plates, glasses and everything you may need while living there. There is also a microwave and a dishwasher. You will have your dedicated shelf both in the fridge and in the pantry, so that you can store your food. Moreover, you can use the washing machine (you just need to buy your own soap and conditioner) and the dryer. There is also WiFi, which works properly and covers the whole house.
The bedroom, at the second floor, is equipped with a comfortable bed (with two pillows), a desk and a chair. There is no wardrobe, but you can find a coat rack and some open shelves to place your clothes. A fan is also provided, which is particularly useful in record-breaking summers like the current. There is also a skylight that can be opened to ventilate. At your arrival, you will find the bed made and two large towels. The bathroom is just outside the bedroom, on the same floor, and has a shower. When staying more than a week, you can pay a weekly fee of £20 to make the housekeepers clean your room and change your linens and towels.
The neighborhood is quiet and safe. Just in front of the house there's a sport centre with facilities such as a gym, a pool and a running track, as well as a park. By walking 15 minutes, you can reach the center of Willesden, where you can find a library, some restaurants, many small shops, and Sainsbury's (a well stocked supermarket).
The place is very well connected through public transportation: bus number 6 (to Aldwych) stops just in front of the house, while bus number 52 (to Victoria, through Hyde Park and Piccadilly Circus) stops within 100 meters; both of them run 24 hours. Moreover, the Willesden Green underground station is 15 minutes walk away and connects to Green Park, Westminster, London Bridge and many other popular places along the Jubilee line. Therefore, reaching my destinations has always been extremely easy.
Last but not least, Nky is a wonderful host: she makes everything she can to make you feel at home. She's always ready to talk with you, as well as involve you in her conversations when she hosts friends. At the same time, she indeed respects your space if you're reserved or just not in the mood. By the way, she's an exceptional chef, so you definitely need to try her food (she also runs a Nigerian restaurant).
To summarize, I've been very lucky to find such a pleasant accommodation during my 4 months in London... I would definitely recommend it!