One vote for hard surface! I have one and have lived with it since 1975. No pins in bare feet (Florida). No threads, bits, etc. in cats' innards, no lost buttons, snaps, screws and etc., easy to keep clean, easy to collect spilled equipment (beads, drinks, etc.), doesn't stain, can be wet or dry mopped quickly, throw rugs can be applied where needed and removed for shaking and so on, a chair with rollers moves beautifully with a minimum of thread removal from the rollers, and for lots of other reasons that aren't coming to the tips of my fingers. This thread stopped me on my way elsewhere and I'm runnig late.
Think really hard about the floor decision. Enjoy whatever it is. That's as crucial as the decision itself. Ask me how I know. (Just held up a bank and bought an extremly expensive sewing/embroidery machine. It's in the shop after 4+ months and I am a tad disgruntled. A design "difficulty" that was known by the maker before I bought the thing. I am going to keep it. It is mostly, exactly what I wanted and I am going to love it no matter what and use the daylights out of it. The factory shop repair set up is top notch and the dealer is even better. Whatever it is will get done well and I am determined. Can you spell "bullheaded" too?)
Happy St. Patrick's Day to us all.
Pat