Thanks very much for Mary's suggestion and reply. When they stayed there, I went there once and they told me about the mattress situation yet they insisted it's okay for her husband to sleep on the couch cushions in the living room floor.
To be fair of some points Mary mentioned, the mattress 100% is newly bought sprung mattress which is the same model myself use at my current home, and since I renew the mattress a few months ago, none other guests complained that it was too bouncy, so I have to provide the fact that they mentioned her husband doesn't have a good back and frankly, he is quite a huge man so I hope everyone can take this as a reference when you read this review/ before you book. About the mattress topper or top sheet, for me it is more than normal to have mattress and fitted sheet; myself is a very experienced airbnb user as well, I have to say I do not find it odd at all.
Regarding to the closet, there's absolutely no bins inside, they are extra duvet and beddings, as well as heating mattress for winter use.
Then, about hand rail bar in the shower and television, etc., I appreciate the opinions yet everything is well listed on this listing; and photos are truly reflecting the appearance and look of the bathroom and the whole flat so please kindly go through the listing and I'd appreciate if the guests can get well known what is included and what is not.