He already said if they do a cement screed to level the floor before laying the tiles, the store room door will not be able to open as the tiles will be blocking the bottom of store room door due to the increase in floor height to get the levelling even.
If it’s lower at the windows end no issue as they can add more cement to raise the floor. But problem is it is lower at main door/store room end, , if raise will block storeroom door from being open.
And he mentioned if u having dinner, your bowl of soup and cup of drink can see the obvious slanting angle