Need to know
20 suites and a penthouse, most with sea views (ground-floor suites have private terraces).
Noon, earliest check-in 3pm; both are flexible, subject to availability. Guests are welcome to use the spa from noon on the day of arrival to noon on the day of departure.
Double rooms from $219.15 (£179), excluding tax at 20 per cent.
Rates include use of the spa and full English breakfast.
Grab an ice cream on Byron's Beach, where guests are provided with deck chairs in front of beach huts, panama hats and sun glasses. Arrange a whisky-tasting or cocktail reception in Seaham Hall's history-rich cellar, former haunt of tunnel-touring rum-runners.
At the hotel
A spacious spa and a fully equipped gym, with cardio machines, weighted equipment and an aerobic studio. In rooms: WiFi, flatscreen TV, Nespresso coffee machine, tea-making facilities and fluffy bathrobes.
Our favourite rooms
For Byron-inspired romance, book a stay in garden-access Suite 4; it has a vibrant colour-palette and nature prints, an impressive Victorian Bathing Machine, and a private terrace with a Scandi-style wood-fired hot tub.
There's a 20-metre heated indoor pool with massage stations in the spa. Outside, there are two soothing hot tubs too.
The Serenity Spa has 17 treatment rooms (three for couples), a 20-metre pool with massage stations, hammam with snail showers and a Jacuzzi, sanarium with crystal light therapy, steam room and sauna, cold plunge pools and a mani-pedi suite. There's also a terrace on which to enjoy post-treatment drinks and nibbles from Ozone. Guests have full use of all spa facilities, but pampering treatments and stress-easing pummelling are extra.
A kite, walking boots, swimsuit and goggles for the pool.
Smoking is only permitted on the terrace.
Welcome in the hotel and restaurant, and at certain times in the Serenity Spa. Babysitting can be arranged with advance warning.