I enjoyed it immensely but I am a big fan . I wondered about the flats but in the last series the Blocks were demolished and although, because of Winston and Tam's escapade raiding Jack's flat and subsequent accidental disarming of the explosive charge by Winston , Jack, Victor and Isa's Block wasn't demolished in the episode perhaps it was implied it would go .
I liked the twist with Bobby finally managing to achieve a surprise party for Isa . I loved the scenes in the spare room above the Bar when they are all hammered with the stolen drink . I bet you cringed with the shot of Winston's pants drying in front of the fire . I enjoyed Shug getting a bigger role than he had in previous shows perhaps . The flat question might get answered as the series continues I think it is head and shoulders above any of the Beeb's other comedy offerings and the episode reinforced it for me personally .