Meeting professors outside office

<p>A professor I emailed recently about research opportunities in his laboratory has responded by saying that he wants to meet me first, but the meeting will have to be outside his office for various reasons. What kind of location would be appropriate for a meeting of this kind? A cafe maybe? I've never met the professor before, so I want to make a good first impression.</p>

<p>I have frequently met with professors in campus common spaces-- your student union, a cafe on campus, the department office.</p>