We recently stayed at this condo on the west side of Lake Arenal. The map shows the location much closer to La Fortuna, but in reality it is closer to an hour an one half (90 minutes) away from La Fortuna and the volcano.
In addition, the description is misleading as it is only has one bedroom. The other is a loft, which is open to the rooms downstairs. The website also indicates it sleeps 6. There are 2 queen beds and one, small futon, which wasn't even big enough to sleep two of my children. We ended up having to have one child sleep on the couch, which was okay, but we had to request additional bedding to accommodate.
I'd recommend this place if you don't mind the location and don't need to sleep more than 4 comfortably. It was very clean and had wonderful views of the lake and volcano, but it's just too far from any of the recreational spots.