Hi Alaina!
I live in Amsterdam, so should be able to help you out!
BnBs/hotels in Adam are notoriously expensive, but because you are coming off season you should get a better deal.
If you go to
www.hotels.nl you will see a really good range. However, they are only showing the availability for August and September at the moment. Have a look though, and if there are any you like the look of feel free to send me the details and I will let you know what the area is like.
Other sites that are worth checking are
http://www.hotelsinholland.com/hotels/amsterdam/
http://www.dutchhotels.nl/
If you come across any other sites that have hotels that you like the look of, but they don't have the info in English, let me know coz I can translate it for you.
Good choice of holiday location! Be warned - I came here on holiday and never went home!
Hope this helps a bit!
Catherine xxx