The "Street University" has 2 large rooms on the 2nd floor available for hourly rental. Currently about $20hr regular or $10hr nonprofits. There is no wi-fi, and acoustically it would not be my preference for rehearsal. However, I have led community music workshops that worked out fine there. Cafe Instanbul is a nice performance space in NOHC, but typical rental fees would make it impractical for regular rehearsal. Never hurts to ask, tho!
Contact someone at the center... They will be able to direct you.
There were spaces for rent the last time i was down there but it didn't say specifically what they could be used for.
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