Firstly, this is a great location. Brixton station is 10 mins walk, and there is a bus stop right outside the front gate that will take you into the West End via the 3 bus, with alternative buses only a 5 minute walk around the block. Although part of a complex of flats it's quiet, and set back from the main road. The view out of the kitchen window is onto a large lawn with mature trees.
The flat itself is a great size for a studio, warm with lots of natural light.
In terms of amenities, it has everything you need for a long stay, including oven/stove, washer-dryer, microwave, iron, etc. Note that the shower (over bath) is a quite slippery when getting out.
I found the bed to be comfortable, and the shower and heating were great.
You aren't paying Ritz prices, so you aren't getting the Ritz. The couch was uncomfortable, and place could definitely do with an overhaul.
But it presents a good value for money option for those on a budget, in a great part of London.