Age and kids policy: what families need to know

Marriott Marquis San Diego Marina is family-friendly and not adults-only — guests may bring children and the property includes a dedicated kids’ pool and complimentary cribs. The minimum age to check in is 18, and the on-site spa requires guests to be at least 18 for treatments.
In this guide
- Who can check in and who is responsible?
- Families, kids and sleeping arrangements
- Pools, pool rules and child-friendly facilities
- Spa, fitness and age restrictions for treatments
- Dining, destination fee and the hotel’s meal approach
- Pets, service animals and safety notes for families
- Practical tips for families before you arrive
Who can check in and who is responsible?
The hotel’s minimum check-in age is 18; an adult (18 or older) must assume liability for the reservation and present government-issued photo ID plus a credit card, debit card, or cash deposit at check-in.
Late arrival outside standard arrival windows is handled as a special request and is subject to availability.
- Check-in time: 4:00 pm (16:00).
- Check-out time: 11:00 am.
- Guest responsible for the reservation must be at least 18.
| Requirement | Detail |
|---|---|
| Minimum check-in age | 18 |
| ID & payment at check-in | Government ID + credit/debit card or cash deposit |
| Check-in / Check-out | 4:00 pm / 11:00 am |
Families, kids and sleeping arrangements
Marriott Marquis San Diego Marina is positioned for both families and business travelers; many room types accommodate up to 4 guests. Complimentary cribs are available for infants.
If you need extra sleeping space, rollaway beds are available for an additional fee (the property lists a $20 per night rollaway charge). Some rooms include sofa beds as noted in their names.
- Room examples that sleep up to 4 guests: Deluxe Room, Balcony, Bay View; Concierge Room, Deluxe Room, with Sofa bed, Bay View; Executive Suite, 1 Bedroom, Bay View.
- Request a crib at no charge when booking or before arrival.
- Rollaway/extra bed fee: $20 per night (subject to availability).
| Room name (exact) | Max listed guests |
|---|---|
| Deluxe Room, Balcony, Bay View | 4 Guests |
| Concierge Room, Deluxe Room, with Sofa bed, Bay View | 4 Guests |
| Executive Suite, 1 Bedroom, Bay View | 4 Guests |

Pools, pool rules and child-friendly facilities
The property has two heated outdoor pools plus a separate children's/kids' pool and two hot tubs; pool hours are documented as 6:00 AM to 10:00 PM. Poolside features include waterfalls, pop jets and a pool bar.
Cabanas are available for a surcharge, lounge chairs are first-come, and the hotel sells a day pass that grants pool access (food and drink are separate).
- Pools: two heated pools + separate kids’ pool.
- Pool hours: typically 6:00 AM–10:00 PM.
- Cabanas and day passes available for an extra fee; towels provided with some paid options.
| Pool feature | Note |
|---|---|
| Kids’ pool | Separate shallow pool for children |
| Hot tubs | Two whirlpools on the pool deck |
| Day pass | Access to pools/hot tubs for a fee; F&B purchases separate |

Spa, fitness and age restrictions for treatments
The on-site boutique spa (The Hideaway) requires spa guests to be at least 18 to receive treatments. Spa treatments include massages, facials, body scrubs and couples experiences.
The fitness center is open 24 hours and offers cardio and strength equipment plus Peloton bikes; some group fitness classes are complimentary while premium classes may carry extra fees.
- Spa minimum age for treatments: 18.
- Spa offerings: massages (including prenatal listed in menu), facials, scrubs, wraps, couples suite.
- Fitness center: open 24 hours with standard cardio and strength equipment.
| Facility | Age or access note |
|---|---|
| The Hideaway spa | 18+ for treatments |
| Fitness center | Open 24 hours; all ages accompanied by adult as appropriate |
Dining, destination fee and the hotel’s meal approach
The hotel is not an all-inclusive property. On-site dining is à la carte: Marvela at the Marquis (breakfast and dinner), Telltale bar and lounge, Agave Bar and Grill (poolside Mexican), Starbucks and the M Club Lounge.
A mandatory daily destination fee is charged separately from room rates; destination-fee benefits have included items such as a daily F&B credit ($15), a one-hour water activity or bike rental, and in-room internet — food and most drink purchases are still paid separately.
- Not all-inclusive — meals and drinks are charged separately unless included in a specific package.
- On-site venues: Marvela at the Marquis, Telltale, Agave Bar and Grill, Starbucks, M Club Lounge.
- Destination fee includes some bundled benefits (example: $15 daily F&B credit, activity credits, Wi‑Fi — verify current inclusions when booking).
| Venue | Typical service |
|---|---|
| Marvela at the Marquis | Breakfast & Dinner (hours listed by hotel) |
| Telltale | Bar/lounge service and shareable plates |
| Agave Bar and Grill | Poolside Mexican bites |
Pets, service animals and safety notes for families
Pets are not permitted at Marriott Marquis San Diego Marina; service animals are always welcome without fee or documentation. If you travel with a service animal, inform the hotel in advance if possible.
Many rooms have balconies and the property has elevated outdoor event terraces — families with young children should supervise balcony and terrace access and request room types or locations suited to their needs when booking.
- Pets: not allowed on property (service animals exempt).
- Service animals: welcome without fee or documentation.
- If you need accessible or mobility/hypersensitive rooms, the property lists several accessible room types (Mobility/Hearing Access, Roll-In Shwr).
| Concern | Hotel note |
|---|---|
| Pets | Not permitted |
| Service animals | Allowed without fee |
| Accessible rooms | Multiple mobility/hearing-access rooms available |

Practical tips for families before you arrive
Confirm crib, rollaway and extra-bed needs with the hotel before arrival; cribs are complimentary but rollaways carry a nightly fee. Also check current destination-fee inclusions so you know whether a water activity or bike rental is included with your stay.
If you plan on spa treatments for younger teens or want to use pool cabanas, ask the property about age rules, availability and surcharges ahead of time. For travel help BookResorts agents are available 24/7 at +1 (888) 605-1350.
- Ask about room location if balconies are a concern for small children.
- Confirm rollaway availability and the $20 per night fee before arrival.
- Check current destination-fee inclusions and pool/cabana prices when you book.
| Contact info | Use |
|---|---|
| Hotel address | 333 West Harbor Drive, San Diego, CA 92101 |
| BookResorts agents (24/7) | +1 (888) 605-1350 |


