Sheen Falls Lodge was once the summer home of the Marquis of Landsdowne — a place for him to disappear for a bit of hunting and fishing, alongside Kenmare Bay and the Sheen River falls. It’s doubtless every bit as stunning as it was in the Marquis’s day, though obviously some things have changed. You won’t have the place to yourself, but you will find the kind of personalized service that’s fit for the lord or lady of the house.

There’s a rich history behind Castle Leslie Estate, set on a thousand countryside acres in County Monaghan: the Leslie family, descended from Attila the Hun, has lived on the property since 1665, and it’s home to the oldest plumbed bath in Ireland. Old-world charm is built into its wood-paneled sitting rooms with gilded oil portraits, buttery soft Chesterfield sofas, and crackling fireplaces. Rooms are split across The Castle and The Lodge, and are just as atmospheric.

It would be difficult to dream up a more picture-perfect castle hotel. Ballynahinch stands on 700 acres of riverside woodland in wild Connemara, offering its guests the quintessential Irish countryside experience alongside the kind of traditionally minded hospitality that’s quickly becoming a lost art. The rooms are handsome, spacious, and up to date in their equipment, though gloriously traditional in their interior-design style.

The lovely waterside Park Hotel Kenmare is a Victorian-era gem, a fixture on Ireland’s luxury-hotel scene for well over a century. In its place, some hotels might go all in on nostalgia, but not this one. Its current owners are devoted to keeping it up to date, and after a renovation by the Kenmare-raised hospitality designer Bryan O’Sullivan, it’s neither a modern experiment nor a strict period piece, but something altogether timeless.

Ireland’s Killarney National Park is home to some of the country’s most inspiring landscapes, and also the remains of structures that are over a thousand years old. It is, in some ways, a trip back in time — which makes it all the more surprising that just outside the town of Killarney is a totally contemporary boutique hotel: The Victoria, a classic country-house hotel, full of details that recall, perhaps not coincidentally, the Victorian era.

Irish luxury hotels don’t get much more lavish than Cashel Palace. This Palladian manor dates back to 1732, and became a hotel in 1959; it was a bona fide celebrity haunt during its days of glamour in the late 20th century. Today, after a thorough renovation by a new set of owners, it’s an aesthetic triumph: a historical hotel that does justice to its heritage, while also presenting a fresh look and a modern sensibility.

Modern architecture and Irish hospitality are two categories whose Venn diagram features a fairly small overlap. But a look at the view from the Cliff House Hotel’s indoor pool will make a convert out of the most die-hard traditionalist. An hour’s drive outside of Cork on Ireland’s south coast, Ardmore isn’t exactly a hotbed of contemporary design. But the Cliff House doesn’t feel out of place here — it just feels extraordinary.

There’s nothing else in Ireland quite like Ballyfin Demesne. This spectacularly well-preserved Regency house sits on no fewer than 614 acres of parklands and woodlands, a mere hour outside of Dublin. And if the exterior is a pitch-perfect restoration, worthy of a 19th-century period film, the interiors are a contemporary-classic evolution of the house’s original style, an opulent fantasy to rival any country-house hotel you could name.

A proper medieval castle on the shores of Lough Corrib, expanded by the Guinness family during the 19th century, Ashford Castle is one of a kind. And the task of turning it into a luxury hotel was one its current proprietors didn’t take lightly: in its new incarnation the castle’s historical atmosphere remains front and center even while its comforts have been adapted to the needs of modern luxury travelers.

County Kildare’s Cliff at Lyons is home to a collection of historic mill buildings — now housing the reception, a restaurant, a bar, and a boutique — as well as a series of wisteria-covered manor houses and stone cottages that contain guest rooms and suites. Picturesque courtyards, gardens, and water features add to the scenic charm, including a lily pond and a stream that runs through the property.

Once the home of the Earl of Dunraven, Adare Manor is a gracious world unto itself, a neo-Gothic manor house surrounded by 840 acres of formal French gardens, parklands, and the River Maigue, all just under three hours from Dublin. Classically European, it’s elegant without a trace of fustiness, especially in the luxurious guest rooms and suites. Golf is a particular focus — the Ryder Cup will be played here in 2027.

When it comes to genteel living in the Irish countryside it would be difficult to top the Mount Juliet. The 18th-century manor is as elegant as they come, as befits a house that’s a former Earl’s residence. Mount Juliet also has your outdoor activities covered, with a top-notch golf course, archery range, an equestrian center, and a cricket club — not to mention close proximity to the River Nore and some very fine fishing.

Far from the grim stone fortress conjured by the name, Gregans Castle turns out to be something quite a bit more refined and urbane: a 250-year-old manor house, lovingly maintained, thoroughly renovated, and reopened as a charming and elegant country house hotel, the sort of place that’s far too high-class to boast about the famous names in the guest book. But they’re there, if you look, and it’s easy to see why.

Famed Irish poet W.B. Yeats loved Castle Dargan, in Ireland’s County Sligo, and a century after his visits it still retains its Irish country charm, with 170 rolling acres of grounds and golf courses to enjoy. The original decorations from the Edwardian era, from the antique furniture to the paintings, have all been preserved. But a stuffy old museum this is not. Castle Dargan houses two floors of clean, modern hotel rooms.

This 19th-century sandstone castle, set mere minutes from the town of Donegal, on the shores of Lough Eske, is nothing short of spectacular. Its present-day proprietors haven’t neglected anything when it comes to the nuts and bolts of modern luxury hospitality. The style happily combines historical elements and contemporary gestures; the rooms and suites are spacious and luxurious, while the public spaces are a particular highlight.