We stayed here for two nights to celebrate hubby's 50th birthday. We'd booked a room with balcony (412) and there were flowers waiting which was a lovely touch. The room was teeny but had everything we needed, the balcony looked over the main road and we could see the canal, Westerkirk and Homomonument.
Breakfast was fine - the biggest, fluffiest croissants I've ever seen and the staff friendly and helpful. Oxygen was almost needed as we reached our room but overall, this hotel is perfectly situated - and is right opposite one of the hop-on hop-off bus stops.
One tip - if you want to go to Anne Frank's house (and it's good to read the book first but not essential) book online before you go. The queue (also visible from our room) stretched right round the Westerkirk and was slow moving. We'd booked a time online and went straight in.
Thanks to all at the Nadia Hotel.