I have a similar question about left luggage facilities in Quito. I arrive and only have one night in Quito before flying out to the Galapagos. However upon my return to Quito, I'm not going back to the hotel as I am flying out that same day, so will just be re-checking in for my flight out of Ecuador and not leaving the airport.
So I'm wondering if there are any left luggage type facilities (lockers or a proper storage facility) at Quito airport where I can leave my suitcase while I'm in the Galapagos? My searching of the web has got conflicting reports on this. I'd really prefer not to take my suitcase with me to the Galapagos and just take a small duffel bag as I expect the cabins on the cruise boat will be quite small. The suitcase is an unfortunate necessity given that all my prior travel in SA on this trip is for business.