We're hoping to buy a 4 bed next year (3 teens, living in rented 3 bed at the moment) and I've spent hours and hours looking at floor plans of available houses in our chosen area, to get an idea of what's available in our price range. I had no idea what we wanted apart from 4 bedrooms and a garage. But after looking at hundreds of floor plans, I have a good idea of what I don't want!
I like this OP, I'd probably buy something with that layout if it came up.
I much prefer no ensuites and bigger bedrooms. As long as there's a downstairs toilet, that's fine. Ensuite in the master would be nice, but not if it was a choice between that and a usable 4th bedroom (seen some less than 6' wide!).
I'd want a utility room. Is there kind of one there? I like utility rooms.
I like the built in wardrobes, not having to buy furniture and having it built in is a huge plus.
I don't like open plan and ideally I'd rather a separate dining room, but lounge diner is acceptable on some layouts (we currently have one but the dining area isn't attached to the kitchen, you have to walk down the hallway and through the lounge). I always thought I'd prefer dining table in the kitchen as it's more convenient for serving up and clearing away, but I see PP arguments re keeping the kitchen mess separate to eating area and that is actually a really good point.