We stayed here for two single nights on either side of a trip to the Osa Peninsula. It was great having a clean, easy hotel to re-pack and get organized for our jungle expedition.
I recommend this hotel for a first or last night around airport travel. Super convenient to the International one, and only about 15-20 minutes by cab to the domestic airport.
Beyond airport convenience, it's a delightful place for R&R amongst the other more challenging adventuring. Perhaps because we were doing all the driving, navigating - lots of hiking and exploring, staying at a Spanish-villa-style Marriott was a welcome retreat. The ambiance was lovely, the pools relaxing and a good breather. The food was fine, although US prices. And don't buy anything in the gift shop - the prices were even higher there than the same Britt shop at the airport.
Location in relation to airports is helpful, with unpredictable / busy traffic at times. Although there are some really nice places in Heredia, if you have to get to an airport and you get jammed in a crawling line, you might find the drive frustrating. And if you choose a hotel in central San Jose, but you won't have time to actually see the city core, there's not much reason to be there overnight - so why not choose this deluxe pocket of posh.