Awesome! Enjoy! I just did a quick Google search on 221B Baker Street, and found this Smithsonian Article from 2012, which includes a photo of that museum in it. It says the 200 block of Baker street did not actually exist in Sherlock's time, and the museum is actually located at 239 Baker Street, but they got the address changed just for the museum.
The Mystery of 221B Baker Street
There are also photos of Sherlock's parlor room from about 5 or 6 Sherlock Holmes museums around the world, and I will say the decor of the one at the London museum is by far how I would picture the room in my own mind...