Technically 4, if you consider that every room that is a decent size and has a closet could be a bedroom. We have a Cape Cod style house, so there are 2 bedrooms downstairs and 2 up. One of the downstairs bedrooms is a den...when we first moved into the house, this was our bedroom, since our upstairs wasn't finished. It's about a 12x12 room. The other downstairs bedroom has always been used as our dining room. It's a good sized room...probably 12x20. We have a center stairwell that goes to the 2nd floor that ahs the classic bedroom on either side and a bathroom right at the top of the stairs. One of the upstairs bedrooms is our master bedroom, the other is a guest room.
It's about an 1800 SF house...plenty for DH & I.