A 50-ton rock waterfall empties 12 feet over a heated grotto spa and the year-round outdoor pool. A 45-foot waterslide, second spa tub, large sundeck, and rental cabanas are also provided. Treasure Island Kids Club (surcharge) for ages 4–12 is open year-round on weekends, seasonally at other times. Kids Club activities include arts and crafts, video games, board games, karaoke, and a big-screen TV featuring family movies.
In the spa, a fitness center (surcharge) offers two treadmills, two stationary bikes, a stair machine, an elliptical trainer, a weight-training machine, and free weights. Tennis and a playground are on the property.
Many water sports are available on the resort's beach or nearby, and rental equipment is available on the beach in front of the resort. Galveston Island Municipal Golf Course is 4.5 miles away.
The recreational activities listed below are available either on site or near the hotel; fees may apply.
- Golf - miniature nearby
- Golfing nearby
- Snorkeling nearby
- Boating nearby
- Surfing/boogie boarding nearby
- Personal motorized watercraft on site
- Rowing or canoeing nearby
- Kayaking nearby
- Sailing nearby
- Scuba diving nearby
- Water skiing nearby
- Motor boating nearby
- Windsurfing nearby
- Pilates classes/instruction nearby
- Yoga classes/instruction nearby
- Aerobics nearby
- Running track/path nearby
- Bicycle rentals nearby
- Hiking/biking trails nearby
- Parasailing nearby
- Bird watching nearby
- Fishing nearby
- Playground on site
- Swimming on site
- Tennis on site
- Segway rental/tour nearby