OP did you ever think about how the vendors would feel about starting a thread on their house and declaring open season on randoms slagging off their house.
Oooh I don't like the kitchen, I don't like garden etc. It's very hurtful.
I don't think Mumsnet should allow these threads. Yes, the advert is in the public domain, but the vendor is advertising it to sell, not to be commented on for sport.
If I could work out that you were the buyer that did this I'd refuse to sell to you on principle.
I suggest if you and your husband can't work out amongst yourselves whether you want to buy the house or not without asking randoms on the Internet you're not mature enough to be a home owner. HTH.