Actually, traditionally Strigoi don't necessarily attempt to change people first. One Strigoi would be quite satisfied, for a time, with having an open hunting ground all to himself; they'd rather kill and feed. However, you're correct that we need to think about the city's population as well. If anyone has connections to local law enforcement, it may be a good idea to put out an alert to the general populace, perhaps just that there is a suspected felon at large.
Generally, they prefer to go to clubs, bars, or other places with a large number of people who can be preyed upon, generally without attracting notice. Places where they won't attract notice themselves, even so far as a goth club or something similar. During the day, he'd need a place that can be completely closed off from sunlight.