I just stayed for one night, with my grandson, pre Christmas London break. Great location, 5 mins walk from Earl’s Court station. Friendly , helpful staff, clean hostel, with comfy dining area.
I do think youth hosteling is becoming quite expensive, £90 for a room with bunk beds and a basin is a bit steep, when a travelogue type would be so more comfy, but I’ve been hosteling for 45 years and trying to visit all the English ones, so we have another one ticked off and a stamp in the book!!!