There are places that everyone should visit once in a lifetime and this is one of them. I haven't visited it yet but I think it's one of them :) When did you visit it? It looks like you were lucky with tourists. I'm sure there were some as there must be always some but it indeed doesn't seem too crowded.
Thank you for showing us your trip and I must say that you were very brave to do this trip considering the health conditions that you mentioned.
Have a lovely day!