I also wanted a map with both Airbnb and hotels, so I made one myself. It's now an aggregator that includes all the hotel sites and a bunch of airbnb's competitors too. The site is http://AllTheRooms.com.
I do like your site but for everyone designing these sites: Please add an option for children. I use services like this very often but I'll skip it immediatly if there is no selection for children (you can guess why).
edit: There is even a bigger problem with your site, the prices do not match even close, see "kotimaailma" - the actual price is not even close to the price you display.
I'm not saying his site does this, but some of them misleadingly display prices pre-taxes, which for hotels in the US can be up to 20% less than you end up paying.
We try to show the same price as the site we're linking you off to. The common practice of 99% of the sites out there is to include the taxes in the price for non-USA destinations, but for USA destinations the taxes are added later. Of course it's ridiculous and doesn't make sense, but the logic is that since everyone else does it that way, you have to as well or it looks like your prices are worse than everyone else's.
There's also the question of fees, and we haven't handled that as well as we need to. For example, Airbnb adds fees on during checkout that aren't included in their landing pages. When we include those fees, which we do right now, it looks like our prices are too high. But we keep them there anyway so that there is a fair comparison with other accommodations options.
