Dorchester Costa review. Nice large cup of coffee which is the norm for Costa. BUT The toilets on the ground floor are atrocious. The first time I used the facilities I thought it might have been the cleaner’s day off or a one off but the next time I realised there was no change despite a gap of over 7 days between visits to the store. The waste bin was filthy. There was no toilet paper and the floor looked as though it hadn’t been cleaned since the last visit. There is no excuse for this sort of lack of attention to hygiene in a store which serves customers of all ages. I certainly wouldn’t want to change a child’s nappy on the changing mat.