We stayed at this hotel on 3 different occasions during our 10 day trip. All the rooms were very nice (we had 3 different rooms) but be forewarned, none of them had air conditioning instead they had ceiling fans. This isn't a problem during the day as you can leave the windows open but at night it becomes a problem because the screens on the windows have some holes in them allowing for bugs/mosquitos to get in if you leave the window open for extra ventilation. Also, the doors to the balcony don't have a screen door so you're out of luck there as well.
We stayed at the hotel with our 5 month old, they gave us a Pack N' Play or play-yard for her to sleep in every night. We didn't use it the first time we stayed there because it was old and very dirty/dusty but the other two times we stayed there it was a different/newer/clean one that we did use.
Perks: The hotel is on the way to Volcan Poas so the views from it are lovely. They have nice outside spaces that the whole family can enjoy. The property is extremely safe and well-enclosed so you don't have random people wandering in off the street, they even have a security gate and guard. Most staff are nice, friendly and helpful. They offer good value tour packages that they can arrange for you. There is a tasty restaurant with a diverse menu on site so you don't have to leave if you don't want to (they'll even provide you with room service!). Free and secure parking for your rental car included, plus coffee, water and juice available all day for free in the restaurant area.
Cons: no air conditioning, no fridges in the rooms (although they will happily store something for you in the kitchen fridge but this is inconvenient when traveling with small children), no elevator (if you have a ton of stuff, but staff will help you), and no safe deposit boxes in the rooms. Also, if you are leaving very early or in the middle of the night (say 3:30am or so), make sure to tell them beforehand or you'll find an empty front desk when you try to checkout.
The pool pictured on the website is a little deceiving because it's much smaller than it looks online. Also, they are remodeling it soon but until then the steps to get into the pool are EXTREMELY slippery, my husband slipped 3 times getting in and hurt himself trying to ensure that our child wasn't hurt when he slipped. Later that evening other guests went to use the pool and we warned them about the steps, they were amazed at how bad they were. We asked the owner to put a sign up letting people know until they get a chance to remodel it.