Like most resorts during high season, the San Luis can get very crowded and rowdy. If you are a couple looking for a romantic getaway, then book a room during late fall, winter, or early spring. DONT even think about Galveston at the San Luis or anywhere on the island during spring break or summer months.
As other reviews have mentioned, employees are very courteous and service is good. You can isolate yourself somewhat with a Club 10 Room. But when people come to Galveston to party and get drunk, hotel staff can't really control that, unless of course you've got JLO's money to rent a suite at the top of the building (see recent Houston Chronicle Sunday review of her stay in Galveston).
For the rest of us mere mortals, you can have a fantastic romantic getaway in a regular room during the seasons when students are in school. After Labor Day, the crowds thin out, and you won't likely run into a drunken party of idiots. And the weather still is great for the beach and the pool.
San Luis Resort has been in Galveston for quite a long time since it was one of the flagship properties of George Mitchell. After he sold it, the biggest rennovation was to the poolside decor, which encourages folks to endulge at the swim-up pool bar. The rooms are standard size. The bathrooms are on the small size, compared even to business chains such as Marriott's Courtyard or Hilton's Hampton Inns. The rooms could use some updating, and none of them will ever compare with the all-inclusive five-star resorts in countries outside the US, such as Costa Rica or Mexico.
Food is average, compared to all the other nearby restaurants in the city.
Bottom LIne: The San Luis is the largest hotel resort in Galveston with the largest pool and the most services under one roof, including a spa and exercise room on the basement level (and a tennis court behind the building). Spending the majority of time at the pool makes the property feel like an exotic resort. It's definitely worth a long weekend away from the big, nasty city for a relaxing and/or romantic getaway.