I apologize if this posts twice, but I don't see my original post from Monday yet.
Our 1915 Craftsman has Douglas Fir wood floors in the bathrooms and the kitchen. In the kitchen, it was under carpet, pad, plywood, and asphalt with newspaper. The refinisher said he could do them, but it may not look good. My other concern is that it is a softer wood, like pine and may not wear well in a higher traffic room.
If you were me would you refinish the floor or tile over it? We are leaning towards slate if we tile. We currently don't have dogs or children so we'd be more gentle than the average homeowner on the floor.