yes, that's one of the most convenient exchanges. but sometimes you may see that exchange rates are different at different exchanges so you need to have accounts with all ot them?
that's not suitable for fast transactions I believe. I came across coinmonkey platform - they aggregate exchange rates from major exchanges and you can use any rate, but now they can exchange coin-to-coin transactions. still, I gave up using exchange accounts for trading coins and turned to coinmonkey. still, when I need to withdraw some cash I use Exmo.