I have been to USA star nails a few times and each time the staff are polite and do a great job at my manicure and pedicure as well as being a little chatty it's not awkward but not so chatty you feel you have to participate in a long conversation. Great Brahe of couloirs both normal and gel. I would definitely recommend for a reasonable price in London.
I've been going to use for years, love the place. I usually award 5 stars but had a manicure yesterday and nail polish has already chipped today, hoping it's a one off. Doesn't usually happen