I've seen a few options and was looking for a bit of advice. We'll probably only use it for nights when the baby is crying a lot so that the husband can sleep on it or if my sister is coming over to watch the baby overnight.
I prefer the look of the okra one but all I would say is make it as comfortable as possible ds basically would only sleep if cosleeping so dp was in the spare room for 6 months. Our old sofa bed ended up hurting his back!
Go an look at the ikea one before buying - we considered it and it is very uncomfortable - part of the 'matress' that you sleep on is wood. We have this one m.ikea.com/gb/en/catalog/products/spr/69840090/ Which we bought without a cover and just use a duvet as a cover. It's a 3/4 bed but they also do a chair - very comfortable and cosy as a sofa too.
The John Lewis one is cute. But if you'd like the same for much cheaper and in a range of plain colours, look up 'z bed' on Amazon or eBay? That's what we're buying for our toddler's room so we can hopefully sleep on it in his room as needed rather than have him squished into our double bed as happens now!