Hmm, yes, I suppose. If you use it of people ("hän on mukava) you'd translate it as nice, since it means someone who is altogether an agreeable person. But when you are talking about places or things, it can also mean comfortable or cozy. If a chair is "mukava", that means that it's comfortable to sit on. A "mukava" place has a nice atmosphere and/or looks nice in a cozy sort of way.