Mountain Side Haven

The adventure doesn't end at Yellowstone. At Mountain Side Haven, the home is part of the vacation!

Bring your favorite people to this redesigned luxury retreat in Island Park, where a day of exploring can end with a pool-table rematch, a relaxing soak or stories around the fire. With 4,367 square feet, seven bedrooms, 5.5 bathrooms and room for up to 20 guests, Mountain Side Haven gives your group space to come together and places to enjoy a quieter moment.

Natural light, inviting living areas and a mountain setting make it easy to settle in. Plan your Yellowstone adventures, bring the whole family and leave a little room in the itinerary for time at home.

YOUR STAY AT A GLANCE

- Space for up to 20 guests

- Hot tub and infrared sauna lounge

- Game and arcade entertainment

- Seasonal pickleball and basketball

- Outdoor dining and fireside gathering

- Children's nook with Marshmallow the alpaca

- Snowmobile and side-by-side trail access

- Desk area and pet-friendly accommodations

GATHER COMFORTABLY

Start the morning with coffee and breakfast together before deciding what the day will bring. The kitchen makes shared meals and snacks part of the experience, while the open living spaces keep everyone connected between outings.

Large windows bring in natural light, and multiple living areas give your group options throughout the day. Gather for conversation, settle in with a book or let the evening unfold over dinner and another round of games.

ROOM FOR EVERYONE TO RECHARGE

Five king beds and three primary suites with private bathrooms give couples and extended families comfortable places to settle in. Another bedroom has two queen beds, while the bunk room features two full-size upper bunks with four twin beds beneath.

With seven bedrooms and 5.5 bathrooms, your group can plan room assignments around the way you travel. The home welcomes a maximum of 20 guests.

ONE MORE GAME

Challenge your crew to pool, gather around the poker table or see who can claim the high score on the pinball machine. Pac-Man brings a little arcade nostalgia to the evening and gives a new generation a chance to join the fun.

A LITTLE HIDEAWAY FOR LITTLE EXPLORERS

Beneath the stairs, Marshmallow the alpaca waits in his cozy nook. Younger guests can stop by for a story, draw at the child-sized table or enjoy a quiet moment between adventures.

Marshmallow loves clean hands and gentle pats. Please help keep him clean and make sure he remains in his nook under the stairs at all times, ready to welcome the next family.

FIND YOUR SLOWER PACE

After a day outdoors, ease into the hot tub or retreat to the separate sauna relaxation area. Enjoy the infrared sauna, then settle into one of two recliners, watch TV or unwind to the relaxing waterfall.

TAKE THE EVENING OUTDOORS

Share a meal in the outdoor dining area, settle into the outdoor seating or gather around the fire table as the day winds down.

A separate wood-burning fire pit, surrounded by eight Adirondack chairs, offers another place to linger. Roast marshmallows, share stories and enjoy the stars.

The fire pit and outdoor dining area are set up when weather permits. Fire use is subject to local restrictions and conditions.

SEASONAL OUTDOOR PLAY

Take the friendly competition outdoors for a game of pickleball or basketball. The court is generally available May–October, weather permitting. Simply remove the pickleball net to switch to basketball.

ADVENTURE BEYOND THE DOORSTEP

Make Mountain Side Haven your home base for Yellowstone outings and exploring Island Park's lakes, trails and mountain scenery.

Head out from the property on snowmobiles or side-by-sides to explore the area's trail systems. Access and riding conditions vary by season and vehicle type, so plan your outing around current conditions and applicable route rules. Then return for a soak, a sauna session or one more game before bed.

A LITTLE SPACE FOR WORK

A desk area gives you a place to catch up when needed, then close your laptop and return to vacation.

PET FRIENDLY

Your four-legged companions can come along, too. Up to two dogs weighing under 50 pounds each are welcome.

Located near some of the region's most popular outdoor attractions, Mountain Side Haven gives guests easy access to the natural beauty and recreation that define this area. It's a fantastic home base for exploring nearby lakes, trails, and the greater Yellowstone region, all while returning to a spacious and comfortable retreat at the end of the day.

With its striking views, expansive layout, and guest-loved mountain setting, Mountain Side Haven offers the kind of stay that brings people together and leaves a lasting impression. Book your stay and experience Island Park from a truly memorable home.

You must be 25 years or older to rent this property.