I stayed in Utrecht three nights, had chosen Jolanda's B&B for my accommodation. The room at Tolsteegsingel 44 was advertised as "luxurious", and for once the room corresponded to the description: the bedroom itself was tall, spacious, light, had an access to a sunny balcony, and everything one needed for a nice, wholesome breakfast was provided. The bathroom (or rather spa) was cleanly, spacious and light, and resembled a lot upper-end hotel bathrooms.
The location is convenient, by one the many canals in Utrecht, and the old city centre is 15 minutes away by foot (of course, if you have bicycle that would be the preferred means of transport in U.).
All of this was topped by the charming personality of Jolanda: I have rarely felt as welcome in my travel destination when traveling for business; she was exactly the person to meet after a tiring flight and a train journey.
Thus, I can only recommend this B&B; I am certainly a returning customer after this visit!