We got this for occasional guests because we didn't want to deal with the hassle of replacing an inflatable mattress which will inevitably leak air after repeated use. 
With a mattress topper, it's super comfortable (we weigh 140 & 160).
Once you open it up and off-gas it for 48h, it's fine. 
Note: even folded up, it has a pretty wide footprint, but you can also stand it on end. Also, the couch function didn't work for us, it's memory foam and it majorly squished under our weight when we tried it as a mini couch. 
Regardless, we highly recommend it!