SHA Mexico vs. St. Regis Costa Mujeres: Which to Book?

SHA Mexico and the St. Regis Costa Mujeres sit right next to each other on the same quiet stretch of coast north of Cancún. I stayed at both back to back in September 2026: eight nights at the St. Regis, then five at SHA. They share a beach and an airport, but they’re completely different trips, at very different prices.

The short version: book SHA to focus on your health, and the St. Regis to relax.

At a glance

The scorecard: SHA wins food, setting and (for now) rooms, the St. Regis wins cost, and the vibe, service, and value are a split.

Cost

SHA is more expensive. My five nights came to about US$8,700 all in, or roughly $1,745 a night. That covered the room, a mandatory treatment program, all meals, and airport transfers.

At the St. Regis, the room alone was about $624 a night before taxes and fees, almost exactly the same as SHA’s room rate. My eight nights came to about US$6,747 after the 5% hotel tax, the 15% resort fee, food, and airport transfers, or about $843 a night. Breakfast is $65 per person (unless your Marriott status covers it), and an airport transfer is MX$2,672.70 (about $151) each way.

Per night, SHA cost me about twice as much. But the rooms cost about the same, and SHA includes all your meals, while at the St. Regis food is extra. So most of the cost difference is really the health program. The St. Regis stay is cheaper, but that’s because it doesn’t include one. Comparing just the rooms and food, they’re very similar.

Verdict: the St. Regis wins on cost. SHA includes a lot more, but it still costs about twice as much per night.

The vibe

SHA is very peaceful, almost serious. Phone calls aren’t allowed indoors, there’s barely any music, and everyone is there to work on their health. Your days are packed with consultations and treatments, so it rarely feels like a vacation, and most guests I saw were traveling alone.

The St. Regis is refined but more relaxed. There’s some music around the pool, the open-air lobby feels breezy, and your time is completely your own. It isn’t a party resort, but it’s livelier than SHA, and it suits a wider range of people, from young couples to families.

Verdict: it’s a split. Pick the St. Regis for a traditional, relaxing beach stay, or SHA for a wellness retreat focused purely on your health.

Rooms

The rooms themselves are fairly similar: comfortable, modern, and close to the ocean. SHA’s are calm and well run, with ocean-view showers and tubs, and I had no real complaints. But you’re not really paying for the room at SHA. Most of the price goes to the health program and longevity treatments.

The St. Regis rooms are brand new and bigger (especially the suites), at about the same room rate, but they’re still being broken in. Our first room had mold around the AC vent, and the AC was sometimes noisy or not working. Our fire alarm went off twice, and every few days we’d hear an alarm somewhere else in the hotel. You can also sometimes hear construction from the floors above, and music from the pool.

Verdict: for now, SHA has the better rooms, because of the AC and mold issues at the St. Regis. The St. Regis has more potential, with bigger, newer rooms at about the same price, once it works out its kinks.

Food

This is SHA’s biggest win. Every meal is included, personalized to you, very healthy, and genuinely delicious, with Mexican and Japanese influences. There’s no coffee, dairy, or red meat, though.

The St. Regis isn’t all-inclusive. Breakfast is a good but fairly standard buffet, and dinner is decent but pricey, with odd hours and a lot of mosquitoes.

Verdict: SHA, easily.

Setting

Both share the same quiet coast, about an hour from Cancún airport, with little else nearby besides the small El Meco ruins.

SHA has several quiet pools, a great spa circuit (hot tub, saunas, steam room, and cold room) included with your stay, and a walking path through the mangroves. The St. Regis has one big, beautiful infinity pool, a quiet private beach, and a romantic lit path down to the sand. But its hot tub and saunas are inside the spa, which you can only use if you book a treatment, and a massage costs about $500.

Verdict: a slight edge to SHA, for its uniqueness and pure relaxation.

Service

Both are very good, in different ways. At SHA, the staff are experienced, every therapist can do every therapy, and everything is customized: your meals, your schedule, and your treatments. Most of the staff remember you by name. At times, though, it feels a little rushed and standardized, with so much packed into tight time slots.

At the St. Regis, you get two butlers on WhatsApp, available 24/7, and ours were very friendly: one walked me to breakfast herself, and they gave us a handwritten letter at checkout. When we found the mold, the manager came to apologize in person, and they upgraded us to a suite.

Verdict: a tie. Personalized care at SHA, warm butler service at the St. Regis.

Value

SHA is expensive, and honestly, most of health is pretty simple: sleep well, eat well, and manage your emotions well. You don’t need a clinic for that. Still, I left feeling calmer and more inspired to focus on my health.

The St. Regis is a decent value right now, with opening rates and off-season prices in late September, but you’re paying luxury prices for a hotel that’s still working out its kinks.

Verdict: a tie. Both are a 7 for me, for different reasons.

Who should book which

These two hotels are really going after quite different people.

Book SHA if you’re traveling solo and focused on your health: better sleep, better eating, and a team of doctors and therapists focused on you, and the price isn’t a dealbreaker. (Here’s whether it worked for me.)

Book the St. Regis if you’re a young family or a couple who wants a relaxing beach trip, or you have Marriott points to use. For many people heading to Cancún, it will be a nice, quiet hotel.

Can’t decide? Do what I did and split your trip. The St. Regis staff even helped coordinate my move next door, and SHA has offered St. Regis guests a 10% discount on treatments.

My verdict

The St. Regis is a well-balanced luxury resort. Nothing about it is extraordinary, good or bad, for the price. SHA, on the other hand, is extraordinary in its focus on health and wellness, with outstanding food and real personal attention, but it’s a health program, not a holiday, and you pay for it.

If you want a relaxing beach vacation, the St. Regis is the better choice and the better value at its opening rates. Because it’s brand new, it still has some kinks, but if I came back in a year or two, I’d hope they’ve been straightened out. If you want to invest in your health, nothing else nearby compares to SHA.

Read the full reviews: SHA Mexico and St. Regis Costa Mujeres.

Both resorts are in my guide to where to stay in Cancún, and if you’re still deciding between coasts, see Cancún vs Cabo.

FAQ

Which is more expensive, SHA or the St. Regis?

SHA. My stay there cost about $1,745 a night all in, versus about $843 a night at the St. Regis. The rooms cost about the same, so most of the difference is SHA’s health program, plus meals, which SHA includes.

Are SHA Mexico and the St. Regis Costa Mujeres next to each other?

Yes. They’re neighbors on the same quiet stretch of coast at Costa Mujeres, north of Cancún, about an hour from Cancún airport.

Which is better for couples or families?

The St. Regis. It’s relaxed and romantic, and it suits young couples and families. SHA is quiet and serious, and most guests come on their own.

Is SHA worth it?

If your main goal is your health, yes: the food, treatments, and personal attention are outstanding. If you mainly want a beach vacation, the St. Regis is the better value.

Can you stay at both?

Yes, that’s what I did. The St. Regis staff helped coordinate my move next door, and SHA has offered St. Regis guests a 10% discount on treatments.