nice to meet you, actually my place is already a B&B before I bought. So I didn’t really pay much effort in renewing it, though I did spend some money in buying new furniture. The most important thing is to the way to advertise your place (of course include a website). I can introduce several channels to you if you want to know.
P.S. Of course you may suffer from low season if you run B&B, but if you are serious enough about it you can earn quite much even in low season.

I actually start bed and breakfast at the beginning of this year. My house has 6 bedrooms and I am renting each room out for 400/week.