Five things to consider when finding a barcamp venue are:
1. The 'camp' aspect of barcamps. FOOcamp, the original barcamp and Milwaukee barcamp all provided the overnight 'camping' option of having a space where barcamp participants can set up a tent, or at least put a sleeping bag. If BarCampFoxValley has no intention of having overnight participants, that would not need to be a consideration, but if organizers of BCFV want to have a social gathering on a Friday night before an all-day Saturday barcamp or want to have a two-day Saturday/Sunday barcamp like BCMke, it will be beneficial to secure a venue with the 'camping' option.
2. Food. Because barcamps/unconferences are participant-driven and have free or very low cost registration fees, it's highly desirable to be able to bring food into the event venue. Many hotel or other commercial event venues will require purchase of food from the venue or their identified food vendors -- very expensive.
3. Room layout. Potential venues for barcamps should have room layouts that are conducive to the main activities at a barcamp. This means a large room where all participants can gather for a kickoff meeting and for meals/social gatherings, medium size rooms for sessions with internet connections and wall space for LCD projectors, and small rooms or gathering locations for impromptu sessions or BOF sessions.
4. Wifi. A huge need for barcamps is to have a strong, reliable wifi system, not an easy thing to provide for 100+ tech enthusiasts and 'net users. In some cases a formal/commercial venue such as a hotel, might have a more robust, reliable wifi system than what an informal non-commercial facility might. But if the formal/commercial venue internet access system doesn't meet the needs of the barcampers, there is a very low probability of barcampers being allowed to hack the system to improve it or to enhance it with additional bandwidth, especially on short notice or at a reasonable cost.
5. Ambiance/Atmosphere/Culture. Depending on the type of ambiance or culture an organizing group wants to create for a barcamp, the venue can be a great help or deterrent. BarCampMilwaukee, with the Bucketworks venue has been able to create and maintain a fantastic informal, flexible, participant-driven culture. MinneBar, the Minneapolis barcamp, has chosen to go with the more formal atmosphere of holding the event at the Best Buy corporate HQ and have a more formalized presentation/session schedule determined in advance of the event. Both types of events can be considered successful, depending on the goals of event organizers and participants, and an informal, flexible, participant-driven atmosphere can be obtained in less-than optimal venues, as BarCampMadison has done in a hotel on the Square and in an unfinished office building.
Bob