One house - many choices. Within the four walls of this mansard victorian is a rare combination of charm and flexibility. If what you want is a comfortable & well designed single-family home in West Cambridge, here it is! And, it is also a house with a 1st-floor bedroom & bath; a house with an auxiliary apartment for your au pair, adult children or extended family; a house with a separate home office. With 4 bedrooms, 3 1/2 bathrooms, 2 fireplaces, a lovely open kitchen & dining room, and a fabulous basement, 17 Holly Ave. has beautiful light and long views. It's a stone's throw from Hi-Rise Bread Company & EHChocolatier, and a slightly longer, but easy, pitch to Harvard Sq. & Huron Village. It is surrounded by beautiful gardens, a secret patio and a bricked driveway for two cars. Extensively renovated (including a new basement) by S&H Construction in 2002, everything inside is of the highest quality and the built-in details and modern systems make living in the house a true pleasure.