Spent ten days here. All in all the apartment was nice, but for what we paid we expected clean dishes, no stains on the sofas and bathroom floor, and basic kitchen utensils like towels, oven mitts and salt and pepper. The smoke detector went off due to leftovers in the toaster from previous tenants. The shower was very random, switching from burning hot to ice cold, maybe due to neighbours turning on the water at the same time. You could feel the springs of the mattress through the fabric. Stairs were narrow but not a problem for us.
On the plus side, the location is perfect, with soho and supermarkets in walking distance, public Transport right around the corner but at the same time a safe and more or less quiet street. The apartment has a good size for two people, would definitely recommend it for a short stay if you care mostly about the location.