Even though I spend the most time at home, it's really hard for me to concentrate when I'm there. There are some spots that I like to do work in the house (especially at the table near the bay window in the kitchen). I also like to work on my bed but that's only if I'm really in the mood to do some work, because I'll get sleepy if I'm not into it. But, I think I work best when I leave the house.
For me, my favorite place to work is in a coffee shop. It seems so stereotypical! A writer in a coffee shop. But it's true. There is good coffee, sometimes there are good snacks, sometimes there's wifi (which usually doesn't matter too much if I'm writing), and there are other people working there. Sometimes I listen to my own music, sometimes not. It's just easy to get down to business in a location where others are working.
Hopefully, my future home can have a study so I don't have to buy coffee every time I want to do serious writing. But, for now, I'll enjoy the coffee shops.
Where do you write? What are the best writing conditions for you?