You're building a marketplace so you have 2 sides of needs you have to balance out. I feel your pain as I'm also trying to build a marketplace startup as well.

You're building a marketplace so you have 2 sides of needs you have to balance out. I feel your pain as I'm also trying to build a marketplace startup as well. What I would do is reach out to people who you believe are your target customers (i.e. event planners) and interview them. Then get feedback for your site. You may notice that depending on the event, you could have different needs for different segments. If you do, narrow your segment till you find that the needs are all the same. You may then have to curate all your venues so that it fits with your target segment. Not all venues may be suitable for all events. Also, have a chat with your users to understand why they haven't sent a venue request yet.