Vibrant hostel exterior, abstract expressionist facade, irregular shapes, bold color blocking, dynamic geometric patterns, textured concrete walls, industrial metal cladding, asymmetrical window arrangements, cantilevered rooflines, whimsical ornamentation, eclectic mix of materials, atmospheric lighting, moody shadows, urban cityscape background, narrow alleyway setting, warm golden hour illumination, shallow depth of field, 1/1 composition, realistic material textures, ambient occlusion.