Hi. I've run a couple of airbnb's out of my house for about a year and a half - but they function as separate units, and I'm a single male... so initially, we have the opposite problem, e.g. getting females comfortable with staying at our airbnbs A few thoughts.
An attractive woman sharing a 700 sq ft apt, bathroom and common living space with a strange man is quite intimate to say the least. No wonder you are getting many more men than women, they are hoping for something more. I would clearly lay out the ground rules in your hosting description - be blunt but polite about it, but make sure there is no uncertainty (tell them you have a boyfriend, tell them you've had previous guests hit on you and you are not interested, whatever) that you are not interested in anything else but providing some tourist tips , --- then if you want to socialize, you have more control over that, it's not an expectation. I think the longer you aribnb, the less you are going to want to socialize with every guest you have. I they have no feedback, I would not accept them, unless, maybe, they are willing to exchange a few emails with you so you can get to know them a bit. In fact I'd exchange emails with all potential guests so you can get a feel for who they are. The downside of course is that you may not do as much airbnb business! but maybe your women guests will pick up... In any case, be careful and good luck!