Portal del Sol is actually a hotel with a restaurant attached to it. It's located directly across from the exit from the San Ignacio ruins. The hotel seems to be under some kind of renovation (or was never quite finished being built) as there is scaffolding at the back and half completed walls.
Accommodation was very, very basic. The room we had smelled of stale cooking. Not sure if we were given a disabled room, but there was certainly lots of room and the bathroom was a wet room. Nice shower, but no curtains on the bathroom window. The bed was quite large and the room seemed to be clean enough.
We didn't try the restaurant, but breakfast was in a different place a 10 minute walk away (you're given a voucher). Not sure why.