AC Hotel by Marriott Portsmouth Downtown/Waterfront

The AC by Marriott Downtown Portsmouth exterior

A rendering of the AC by Marriott Portsmouth Downtown, Portsmouth’s newest nationally flagged downtown hotel

The palpably elegant AC Hotel at 299 Vaughan St, is Portsmouth’s newest property, is located at the edge of the downtown core, (MAP) a picturesque half-mile walk past restaurants and trendy retail stores to Market Square. 

Though we don’t think of the AC as a waterfront property, it does offer panoramic views of Portsmouth’s working harbor from the upper floors and rooftop bar and restaurant (open-air in season), which has quickly become one of Portsmouth’s top-rated dining options for visitors and local residents.

The hotel incorporates every modern convenience, including spacious and airy public spaces, hydration stations on every floor, and comfortable state of the art, thoughtfully designed, clutter-free guestrooms, with high-end Korres toiletries.

A nod to AC’s Spanish founder, breakfast with an Iberian accent is served from 7:00am to 10:00am and features freshly baked croissants, house made Spanish egg tarts, freshly sliced Iberico prosciutto and cheese as well as classic favorites like fresh fruit, cereal and yogurt.  Tapas and local craft beers are served in the lounge from 4:00pm to 10:00 pm daily.

Finally, the hotel also has a fitness center with treadmills, elliptical machines and exercise bikes, and free weights on site.


A stylish, new downtown hotel with every modern hotel convenience including a fine, seasonal “Envoi” rooftop restaurant of its own.  

Highly recommended … there is nothing here not to like.