Good location - less than 5 minute walk to Notting Hill Gate underground station and 5 minute walk to Portobello Market. 3 minute walk from The Little Yellow Door (cool bar to check out).
Nice accommodation - clean and same size as the photos (small but liveable for a short weekend break of 2 or 3 days). Kitchen lacks a bottle opener but sufficiently stocked for basic cooking needs. Bring your own shampoo and soap. Shower is warm.
Bed is comfortable for two people - it is an elevated mattress on the ground but comfortable and large enough for two adults. Ceiling above the bed is a little low so you'll have to bend a little if you are over 5ft 7.
The person living in a flat above was a bit noisy a couple of times (e.g. banging around at midnight) but not sufficient to disrupt sleep (even if you are a light sleeper).
All in all, for the price and location this is a good property for a couple of nights stay.