If you want to get more into your budget, this hostel just outside of the centre of Amsterdam is a great choice for your hen party. With a tramstop just metres up the road you will be able to jump on and jump off in exactly the area you want to be. Leidseplein is a definite recommendation to hop off to discover the top bars and clubs Amsterdam has to offer.
Most rooms are based on 6 people in bunk beds and are en-suite so you won't be sharing facilities with other groups.