There aren't many cheap places in the center, but I can recommend the Alexander B&B. They have 4 stars, despite being a cheap place.
Okay, I would like a booking please.
I'd be happy to help you with that booking. Just tell me how many are in your party, and what nights you are looking for accommodation.
Yes, I need a hotel for 2 for four nights starting Wednesday. Please send me the reference number once booked.