It's a marvellous apartment, our stay was wonderful. We was three but we have enough place. Very comfortable bed. Luxurious bathroom, and one useful kitchen, with all things you need, fridge, Nesspreso coffee maker, Nick leave the capsules, horno, ..... Nick is very friendly and helpful. The underground is near about ten minutes walking, and you only needs some station to get on city centre.
If you go London without doubt take the Nick's apartment