I am buying a Yurt and need help

[Amandayork]

Hi , I live in Spain and am wanting to buy a yurt to put in my garden for visitors. I am not sure on what is good or bad as I am getting different comments for sellers. I live in a hot climate which has heavy rain and wind in the winter months. Please can anyone advise on the following:-

Is Horsehair better or polyester
Is Sheeps Wool better
IS 16FT a good size to start with to sleep a couple
What is the best thing to buy for the toilet and bathroom facilities
One that is selling is without the middle poles (crown supports) is this normal
Is a Mongolian Yurt a good buy
what is the best stove to use
thanks in advance!!