what are important factors when purchasing a sleeper sofa?
Working out what you want to use the sleeper sofa for most of the time will be important: do you need it mostly as a bed, or as a sofa? If you're expecting it to be used mostly as a bed, then it's worth looking at the quality of the mattress, how easy it is to fold up and back again, and the general quality of the sleeper sofa. If you're expecting it to be used mostly as a sofa, perhaps getting a sofa that's large enough for guests to sleep on (without having to fold it out) would be a better idea. You could also put the s sleeper sofa mattress on the floor and have your guests sleep just on the mattress: this avoids the problem of having the bars pushing into your guest's back.
hmmm make sure it is a good quality, also you may want to try them out. Also try finding a good seller and maybe ask others of what sofa to get and maybe ask some people what they think of the sofa if they have one. i hope that that helped
The only really important factor is whether or not you can feel the metal bars when you lay down on the bed.