66 Summer Street Downtown Stamford Apartments The most central, walkable downtown location. The most superior, sound construction. The most up-to-date amenities. 66 Summer Street Apartments combines the ultimate Downtown Stamford setting with truly upscale apartment living. From the inspired urban design of each interior space to the sweeping city park and water views from the Solstice roof deck lounge, you’ll experience what it means to be distinctively downtown – City + Life at its absolute best.