I like my Ikea sofa but I will say that it's not the most comfortable sofa I've ever had. I thought the models in the store were softer than the one I brought home. I thought it would soften up over time but it's been more than two years and it's still quite firm. (It is not a sofa-bed.) It works well for our house with 3 young boys but you might want to check out other sofa stores for comparison.
One of the reasons I went with Ikea is that I thought I could get replacement slip covers any time I wanted. Well, a year after I bought my Hovas sofa, they discontinued it and covers are no longer available.

Ikea has been doing that a lot lately - discontinuing products.