Nice place with top-notch location- across the street from Hyde Park and within walking distance to many other nice locations. Despite its central location the street is very quiet.
The staff were nice enough and the place was clean and tidy.
The kitchen is well-equipped with everything you need to make a meal, plus free coffee/tea. There's fridge and cupboard for your food.
Bathroom was clean and the water in the shower were always hot.
WiFi was strong throughout the place.
There are cages under the bed to store belongings and you can either bring your own lock or get one for a deposit.
The bed lamps have built-in socket for USB so you don't even need an adapter, just your cable.
I paid 25£ per night and at this price the place is almost unbeatable.