Charles River Square is a neighborhood within a neighborhood, a hidden jewel on the prestigious Flat of Beacon Hill. Within this highly coveted community is a charming European-like cul-de-sac, and on this cul-de-sac sits a stunningly beautiful Neo-Georgian townhouse.

Originally built in 1909, Sally Brewster of Brewster and Berkowitz has listed this completely renovated four-bedroom, three-and-a-half bathroom townhome, located at 5 Charles River Sq., for $4,190,000.

First impressions of this 3,401-square-foot home proclaim that this is a very special place to live; a place where the charm of the old world meets all the comforts of the 21st century, creating a luxurious home just waiting for its new family to enjoy.

A massively marvelous mixture of the past and present awakens the senses as one walks through this elegant 14-room home.

Gleaming hardwood floors, ornate vaulted ceilings, wide crown moldings, six charismatic gas fireplaces and niches of built-ins are just a few eye-catching characteristics that add charm and accentuate chic.

Some of the upgrades during the renovation include high efficiency windows, lots of recessed lighting and wall sconces, central air conditioning and a spacious entertainment roof deck.

The NEST system allows you to adjust temperatures, control lights and manage other devices within the home via a cell phone, making the home safe and comfortable whether you are at home, coming home or on extended trips away from home.

Each floor offers luxurious living; each room boasts unique features and function.

Located on the garden level, the large bright and sunny kitchen is perfect for the chef who takes pride in their culinary creations. It will be easy to let your inner-Bobby Flay or Julia Child shine here. The stainless steel appliances are all high end – a large four-burn Viking professional gas stove and oven as well as a second Viking oven and a Sub-Zero refrigerator. Making the ensemble complete is a dishwasher, two sinks and a garbage disposal.

The attention-grabbing white cabinets with beautiful glass-fronts and sleek countertops naturally flow into the dining area. This space has an alcove with two built-in seats accompanied by a table and additional chairs of one’s choosing. A breakfast bar with seating for two discreetly separates the workspace of the kitchen from the dining area.

A door leads out onto “Annie Fields Garden,” an abutting courtyard with lots of colorful plants and flowers dispersed among picturesque trees shared by the Charles River Park community. It’s a garden that writer Annie Adams Fields left to Boston after her death in 1915.

Also on the garden level is a half bath as well as the laundry room with a side-by-side Maytag Maxima washer and dryer with plenty of space to keep laundry and cleaning supplies.

While the elegant south facing living-dining room features wide crown moldings and an elegant chandelier that asserts dignity and class, the stately wood-paneled study provides delightful views of the “Annie Fields Garden.” Each of these rooms hosted by the first level accentuates a distinctive fireplace.

Residents and guests will enjoy the corresponding wood-paneled wet bar that includes its own refrigerator and sundry built-ins.

The vaulted-ceiling family room on the garden level and the front-facing library on the second floor are cozy places to have lively conversations around the fireplace, challenge family and friends with exciting board games such as Trivia or Tripoli or fun card games such as Pinochle or Phase 10, or simply watch a movie or two.

The master suite on the second floor exudes comfort, relaxation and privacy. The master bedroom is large and tastefully fashioned; two windows let in the natural light while a fireplace enhances the warmth. The very large en suite bathroom has a steam shower.

The three rooms on the third floor are versatile. Typically used as bedrooms, these rooms could also be used as a hobby room, an office or an exercise room.

The largest room has a fireplace with built-in shelves on both sides, space for a bed, bureau and seating area, and easy access to a jumbo walk-in closet off the hall.

While the second room has lots of built-in drawers and shelves, the third room has an en suite bathroom with a ball and claw tub. Each of these rooms overlooks the beautiful garden.

The second shared bathroom on this floor has a tub-shower.

One might uncover what some consider the real treasure of this home on the roof – a spectacular roof deck with new treated wood. It even comes with a large blue awning – an iconic feature – shielding one from the hot rays of the sun or from the rain. This large entertaining space is the perfect place to experience life 365 days a year, 24 hours a day (hopefully not all consecutively!). BBQs and picnics, morning cups of coffee, evening cocktails, sunrises and sunsets, the city skyline, and holiday happenings can all be enjoyed from the comforts of this fabulous el fresco space.

The location of this home is perfect as well.

The Charles River Esplanade is right across the street. The Arthur Fiedler Footbridge to get across Storrow Drive is an easy walk away. You’ll have the option of milling with the hordes of people at the Hatch Shell or sitting on your deck while watching the Boston Pops rehearse on July 3rd and perform on July 4th. You’ll also be able to savor the fireworks from your own private roof deck.

A short stroll from your home brings you to the colorful Public Garden, Frog Pond and Boston Common as well as the beautiful Commonwealth Avenue Mall. There are plenty of shops and restaurants nearby, including those on Newbury Street. Massachusetts General Hospital and the Massachusetts State House are conveniently nearby. The MBTA’s Charles/MGH Red Line as well as the Arlington Street and Park Street Green Line stations are easy to reach.

Have a car? Parking is right in front of your home and Storrow Drive is easy to get to.

Beacon Hill certainly has many special homes. This one is on the top tier of what makes this neighborhood such a fantastic place to live.