Many hotels seem to offer elaborate breakfasts for 18-25 Euros. Is it worth getting that or are there so many nice restaurants to have breakfast for much less money?
It really depends what you need in the morning. Many people seem to go wild over hotel breakfasts, others seem to need a big heavy breakfast to get going. Myself, I do something light, and plan a decent lunch. There are places on the square that offer a simple breakfast, coffee shops offer a coffee and lighter fare, places with English breakfast, crepes, toast. I would say do a google search and see what sounds appetizing. Just be warned, if you are thinking Waffles...those seem to be later in the day fare.
The only difficulty for some, is that most places do not open until 8:00 or 9:00. So if you are into an early start, you may need to do some searching, or settle for "Brunch".
Le Pain Quotidien has moved in recent years to between the Grote Markt and Saint Salvator Cathedral (where the Michelangelo statue is) from their old location near the Crowne Plaza on Philipstockstraat.
They are now at
Simon Stevinplein 15
A good filling brekkie or a simple one, plenty of yumminess pretty much guaranteed. Yum. Oh, and they open at 7:30.
Is it worth getting that or are there so many nice restaurants to have breakfast for much less money?
To answer your question, 18-25 euros for a breakfast is a rip in my opinion, in Europe or the US. If you always have a big breakfast everyday, then it will be just added expense for your trip. If you don't at home, then find a bakery and for 5-7 euros you will find plenty to start your day.
However, to each his own.