When a grand piano is needed, and an advanced musician is involved, it's often prudent to consider larger sizes beyond a baby grand. Think of the "160 Stockholm" as the performance class to the "Sovereign". Similar in every way except size and power, the "160 Stockholm" (164 cm / 5'5") will never hold you captive musically. If you are considering a performance grand for a smaller space, make sure you have a chance to experience this piano. Its [entirely competitive] action and [much richer] tone will win you over with the first encounter.