Honoka's house is modeled after "Takemura". It is the "Japanese sweets shop Homura".
It appears in Episode 1 of "Love Live!" (10 minutes 50 seconds)
It is a historic house located between two buildings. Because "Takemura" is a wooden building built in 1930, it is selected as one of Tokyo Metropolitan Selected Historical Buildings. However, taking pictures prohibited in the building(Food is OK)
It is a 10 minute walk south of Akihabara Station (Electric Town Exit)