Stayed at the Baker's Row apartment with our family of 5. We had looked into 2 hotel rooms versus staying at some other apartments, but this suited our needs the best. It consisted of 2 bedrooms, each with 3 twin beds (meaning no one had to share a bed), 2 full bathrooms, a large living/dining area with a table to sit 6 as well as two sofas, and a kitchen with gas oven, microwave, 2 fridges, and even a washer and dryer.
As others of have said, it was a little bit of pain to check in at a different site, but they were very nice and let us stow our luggage there before check in. The apartment in furnished mostly with IKEA everything; the flooring in the kitchen was not in great shape; and the blinds did not all work well.
BUT, for our family, and especially in LONDON, this is a great deal. We had the room to spread out, there were lots of bus stops and shops/restaurants close by, and since it was not on a major street, with the windows closed it was relatively quiet compared to some places.The Farringdon station was relatively close by as well. Highly recommend running by King of Falafel to pick up food to go!