Absolutely wonderful art and could spend days there. Went in during free admission (last 2 hours of the day) and saw only one floor - and we sped through. Went back on a full ticket and spent another 4 hours there exploring all the floors. Skipped the sculptures as we prefer paintings, but could have spent another 2 hours looking at all the art. The room numbering and room layout was a little confusing and we frequently had to backtrack to rooms we had missed. We also went in low season and the crowds were considerable even then!