The types of rooms available at Omni La Costa Resort & Spa Carlsbad include Studio Villa (1 King Bed), Plaza Suite (2 Queen Beds), Signature Room (1 King Bed), One Bedroom Villa (2 Queen Beds), Plaza Room (2 Queen Beds), La Costa Room Ground Level (2 Queen Beds), Two Bedroom Executive Villa (King in each room), Executive Villa (1 King Bed), One Bedroom Villa (1 King Bed), La Costa Room (1 King Bed), La Costa Room Ground Level (1 King Bed), Two Bedroom Villa (King Bed in each room), La Costa Suite (1 King Bed), Villa Room (1 King Bed), Family Suite (2 Bedrooms 1 King and 2 Queen Beds), and Plaza Suite (1 King Bed).

The occupancy of the rooms ranges from 3 adults and 1 child to 6 adults and 6 children, depending on the room type. Smoking is not allowed in any of the rooms. The bed sizes vary and include King size beds, Queen size beds, and Sofa beds. The room sizes range from 420 sqft to 1798 sqft.

Guests at Omni La Costa Resort & Spa Carlsbad can spend their time enjoying the leisure amenities offered by the hotel. They can relax and rejuvenate at the spa, which offers various packages and services such as body wraps, scrubs, facials, and massages. The hotel also has an outdoor swimming pool with a waterslide and a separate kids' pool for the little ones to have fun. Guests can also take advantage of the hot tub, sauna, and fitness center for a complete wellness experience. For outdoor activities, the hotel has a golf course, tennis court, hiking trails, and offers bicycle rentals.

When it comes to dining, the hotel has several restaurants to choose from. Bob Steak & Chop House offers a traditional ambiance and steakhouse cuisine. Marketplace is family-friendly and serves American cuisine. Bar Traza offers a modern ambiance and a variety of cuisines including American, Mediterranean, seafood, local, and international. The hotel also has Edge Bar and VUE, both family-friendly with a modern ambiance and serving American, seafood, and local cuisine. Additionally, there is Spa Cafe for spa patrons only, known for its romantic ambiance and American cuisine.

The hotel has four pools. Pool 1 and Pool 2 are available all year round and are located outdoors. Pool 1 is suitable for all ages and features a heated infinity pool with a view. Pool 2 is for adults only and has a heated pool with a shallow end and a view. Pool 3 and Pool 4 are also available all year round, located outdoors, and for adults only. Pool 3 has a heated pool with a shallow end, while Pool 4 has the same features but without a shallow end.

The Omni La Costa Resort & Spa Carlsbad has several restaurants on site. These include Bob Steak & Chop House, Marketplace, Bar Traza, Edge Bar (open weather permitting), VUE, and Spa Cafe (for spa patrons only). The cuisines range from steakhouse to American to Mediterranean and seafood.

Omni La Costa Resort & Spa Carlsbad does not accept cash payments. However, they accept a wide range of credit cards, including Discover, Visa, JCB, American Express, Diners Club, Mastercard, Carte Blanche, and UnionPay.