Am Amsterdam based, but don't know of any campsites in or around. Advice above looks the best bet for staying somewhere near the centre at a decent price.
As for taking a nice bike! If you lock it up for long periods anywhere central, and especially near the station and the main tourist drags and red light district, it's probably gonna go walkies. Or bits of it at the least.
Most locals take the view that they're gonna lose their bike at some point, so it's quite a laissez-faire attitude towards them. When I lock mine I put a d-lock through the front wheel and lock it to something solid, put an abus chain lock through the frame and the back wheel, again to something solid. And have the saddle on QR. I never leave it overnight and try not to leave it for long periods of time. Based on this I would recommend renting a bike rather than taking the risk.
Am Amsterdam based, but don't know of any campsites in or around. Advice above looks the best bet for staying somewhere near the centre at a decent price.
As for taking a nice bike! If you lock it up for long periods anywhere central, and especially near the station and the main tourist drags and red light district, it's probably gonna go walkies. Or bits of it at the least.
Most locals take the view that they're gonna lose their bike at some point, so it's quite a laissez-faire attitude towards them. When I lock mine I put a d-lock through the front wheel and lock it to something solid, put an abus chain lock through the frame and the back wheel, again to something solid. And have the saddle on QR. I never leave it overnight and try not to leave it for long periods of time. Based on this I would recommend renting a bike rather than taking the risk.
If you want any more info let me know!