I was a little shaky when we got off the airplane in Juliaca ~12,550 feet. After we took the bus to Sillustani at 13,200 feet high, we must have adjusted to the altitude because we felt fine. The short story is that Sillustani is an Incan burial ground. There is a real long story (the tour was two hours long).
We made it to the hotel in Puno. It's not like Cousco where there was a lot to do around the hotel and it was safe to go anywhere. There is nothing around the hotel here, and we were told to remain on the hotel grounds. But it is very pretty here at night. Our room has a view across Lake Titicaca.