Where to locate a hackerspace... Let's say money isn't an issue because you've got funding:
- Someplace close to educational sector, since it will attract youth,
- Located in cultural centers so it can instruct the world-at-large,
- Near bike paths and/or public transport to lead with the highest examples.
If money is an issue, keep the last one and try to maximize one of the others in relation to cost of rent unless you going to try the "building liberation and reuse"(TM) route. If that's the case find Hack the Law, Lesson #6 and Hack Capitalism.