This hotel has a total of 165 guestrooms! There are two distinct parts to the hotel: 147 rooms in the new wing and the 18 suites, all different from one another, in the old mansion. They all have a very pleasant view of the gardens and the golf courses which stretch as far as the eye can see. The graceful brand new standard rooms are all very pleasantly spacious. They are immaculate and furnished with very comfortable king size beds, a large plasma screen television (showing a great number of channels), a CD and DVD player, an elaborate minibar, tea and coffee-making facilities, individual air-conditioning, a telephone, a safe large enough to fit a laptop inside, an iron and an ironing board. The decoration of the rooms was carefully chosen and features very cold colours such as grey, white and black, enhanced by two upright violet armchairs, white walls and a bed frame of contemporary design, with its white leather padded headboard. The black and white bathrooms, both simple and elegant, are all equipped with a bathtub framed with black marble, a washbasin resting on a black marble top, a very large mirror, a separate tropical shower, a toilet fitted in a sort of niche, a hairdryer, bathrobes and slippers and beautiful hospitality products by 'Aveda'.

The historic suites are all different from one another - each one spacious and each featuring a pleasant lounge, a meeting room, a large bedroom, a bathroom and a separate toilet for potential visitors. A superb glass lift has been fitted in the older building for easier access to each of the suites. 24-hour room service is available.

Carton House is a long estate, which has now been developed into two distinct parts: to one side stands the Duke of Leinster's stately home built in 1739; to the other side, the brand spanking new buildings dating from 2006, the year in which the hotel opened its doors. The beautiful modern entrance hall is uncluttered and elegant, especially with its several white counters and large snug sofas. Nothing has been left to chance in terms of decoration: in the new section of the resort, some decorative features give a reminder of the old building if your eye is sharp enough to detect them. The superb building looks out to the trees and lawns thanks to its numerous bay windows. The estate stretches over more than 1,000 acres, which includes two very popular golf courses and a football pitch which once played host to the football team Real Madrid.

The corridor from the main reception leads to the old quarters. The person most responsible for the beauty of the original site was architect Richard Castles who built Carton House for Robert Fitzgerald in 1739. The Leinster family tree can be seen on one of the walls. Beyond that lies the superb Bell Room and its walls painted as faux wood, its fire place and a multitude of bells hanging around the ceiling. They were once used to call the various servants of the house's occupants. The Bell room then unfolds into the Malahide lounge where guests can relax with a hot cup of tea or coffee. The setting is very comfortable and spacious, decorated with four pillars supporting the ceiling and a large fire place. The gem of this place is its Gold Room - as its name suggests, gold is the colour dominating this room, at the centre of the old mansion, and is definitely its highlight. Even the organ is clad in that colour. The paintings are framed with gold, perfectly blending in with the walls they are hanging on. On the vaulted ceiling ornate with reliefs, floral garlands seem to be falling from the sky. The mouldings between the walls and the beautifully crafted ceiling make the room look fantastic, especially with the upward lighting. The splendid marble fire place is so beautiful you will want to take the time to admire it. Large openings enable guests to go from there to the gardens for a breath of fresh air or a stroll around the rose garden, while admiring the flawless lawns stretching as far as the eye can see. Every part of the estate is open to guests, except for when there is a private function or special event taking place.

Further down the main corridor, at the other end, you will find the spa set on two levels, where soothing music is played. The spa consists of seven treatment rooms, plus one adapted for couples. These rooms are set in a line and are decorated in shades of brown and cream. Bay windows embellish the already beautiful relaxation room, furnished with wooden deckchairs and cream-coloured mats. The swimming pool unfolds along 18 whole metres and the roof lets in plenty of natural light. The spa has a separate entrance and its amenities include a weightlifting room on the ground floor and a gym fitted with 9 apparatus each topped with a television on the first floor.

The beautiful stables have been renovated to cater for golfers (into a country club, a superb sports boutique adapted to professionals, a buggy park, etc). Another of the convenient facilities provided by the hotel is the large car park.

Beyond the spacious reception lies the Kitchen Bar with a very high ceiling, where nibbles such as elaborate sandwiches, salads, goat's cheese, etc, are on offer. This place is divided into several small pleasant areas, the largest one displaying part of the old kitchen of the Duke of Leinster's mansion, with objects such as iron utensils dating from bygone times, old stoves, etc, on show. The mixture of old and more recent features is really nice! One of these rooms is small and long, decorated with beautifully-tiled walls. Still walking in the same direction, visitors then encounter the much more modern Lake Bar and its lit-up counter which opens at 6:00pm. It is also possible to sit down and have a drink in the very bright reception. On the stables side, the Clubhouse is spacious and very affordable (not too formal), and is a place where everyone can have lunch or dinner comfortably seated on red banquettes. Not far from the reception, you will find the main restaurant of the resort, the aptly named Linden Tree, because of the linden trees standing just in front of it. Contemporary Irish cuisine is served, as well as international dishes, for breakfast and dinner. One side of this most pleasant oblong building entirely consists of bay windows, giving guests a superb view of the surrounding greenery while they enjoy their meal. The à la carte menu evolves with the season.

The hotel is often reserved by companies for their incentive trips and the two very popular golf courses (both 18 holes) are used for golf championships. Moreover, the 'Carton House' resort was elected 'European Golf Course Resort of the year' in 2008 by the International Association of Golf Tour Operators. It is also the place chosen by the Golfing Union of Ireland and the National Golf School as their headquarters. Other activities organized by the hotel are clay pigeon shooting, 4x4 and fishing (in the small river which gently flows across the vast estate).

Wireless internet access is free of charge here, There is also a computer at the guests' disposal. The gym however is rather standard.

The Duke of Leinster's family is buried in the immense park surrounding the hotel.