This SmokeFree Breakfast in Akiba site
introduces and rates the various stores in Akihabara that serve breakfast.
Instead of rating the quality and price of the food,
this site will rate the "smoke free" environment of the store.
The first floor is non-smoking, and the second floor is smoking.
I haven't smelt the smoke on the first floor, never been to the second floor.
The first floor isn't very big, with only 16 seats.
The second floor has 39 seats.
There is a breakfast set for 300 yen (donut under 136 yen + drink)
and 320 yen (donut or pie over 147 yen + drink).
The donuts and pies are small, but the breakfast set is pretty cheap,
so you can add another donut and it's still pretty reasonable.