What I loved about the time I spent on Amantani was the way the model of tourism they've developed there is organised. Basically, the entrance fees paid by tourists are divided up equally amongst the different communities that make up the archipelago. Part of the revenue earned through tourism goes to the host family and part goes to a central community fund used for community development purposes. Today, almost half the island's inhabitants are involved in rural tourism.
Don't expect fo find the height of luxury when you stay on Amantani. Comfort levels are fairly minimal, though you'll lack for nothing. I recommend taking warm clothing because it gets very cold at night. Even though the host families usually provide several covers, I was really glad I had a good woolly hat and fingerless gloves with me to ensure I could get a comfortable night's sleep. As far as the climate is concerned, there isn't a great deal of difference between daytime and night-time in this région of Peru.
No woolly hat? No problem. Your temporary mother for the day will no doubt offer you the chance to purchase one of her knitted ones. This provides you with a good opportunity to directly contribute to supporting your host, especially when you consider that tourism and traditional arts and crafts are the main sources of income for the island.
I wasn't able to make the most of the place because I only stayed there a few hours, just long enough for the classic visit. From what I was able to see, the island is very touristy and I couldn't say whether the traditional clothes were worn from choice or to please the visitors...and so earn a little money.
The island of Amantani is definitely very pretty, but I was a bit disappointed by the visit. I didn't get a feeling of authenticity from the inhabitants, just like on the islands of Uros or Taquile. It's a shame.
Having said that, the countryside is superb. Two peaks overlook the terraced basins which are pierced by little paved paths. The view over the lake is fantastic. Once again, you should stay the night there if you can. It will make for a completely different experience. You'll be able to get past the typical images of women knitting hats and socks for the tourists.