I've lived my early childhood though USSR (Latvia; born in 1979), and have been to relatively recently remodeled hospitals on multiple occasions for an extended stay. Plaster and paint easily fell off, tiling was irregular and often cracked, walls were never straight or evenly plasered, bed frames already had rust, springs always squeaked. All that said, it was clean, yet because of build quality, standardized pale paint colors, and poor lighting it seemed very used and in need of repairs. It could give impression of being dirty, when watched over TV. 15 years for that type of build quality is a long time.