I don't think a hedgehog would use one. It would need to be hung at almost floor level and I think they would go under it rather than in it. If you are going to have to buy one, I wouldn't waste the money.
Well I thought I would throw this in, I got hammocks and igloos for both of my hedgies, and my female will not sleep anywhere else, it is very low to the floor so she is millimeters from the floor when she is inside but she loves it. The male uses it the most but will use his igloo at times, every now and then he sleeps under it and covers himself up with his blankets. I may just have hedgies that think the are ferrets I guess lol.