Bad Floor Job by Seller?

[Alexander N.]

Hi All,

As stated above, I am buying a 2 unit house from a seller who is a contractor. He renovated the 1st floor beautifully. I will be living in the second, and he agreed to sand and stain the 2nd floor hardwood in the same fashion as the first floor. Our close date is 1-week away. I don't want to hold up the deal for petty items, but the seller's agent disagrees that there is anything wrong with the staining job upstairs. To me, it looks filled with streaks and patches and discoloration - brush streaks maybe? I'd like the BP community's opinion on the job - am I nitpicking? See photos.