Disabled holiday Amsterdam

Hello All, 

I'm a disabled (tetraplegic) wheelchair user with a personal assistant; I have a friend who has moved to Amsterdam and I'm planning on visiting him. However I haven't been to Amsterdam before and was wondering if any other disabled people, particularly wheelchair users, had been to Amsterdam and had any advice or recommendations? Particularly in terms of hotels and travel? Will I need to rent a car? Anything or anywhere to avoid?

Look forward to replies, 

T