Our stay at Maison Vongprachan exceeded our expectations on basically every level. All the basics were on point (clean room, no bugs, A/C worked great, hot water all the time, always felt our belongings were completely safe), but the service we received from the staff made us feel as though we were staying in a 5 star hotel.
The young woman who works during the day at the front desk, I believe her name is Hien, was an amazing resource. From arranging a tuk-tuk driver for the day at a rate much lower than we ever could have found on our own, to printing out the Visa we needed for Vietnam (very hard to find a printer in Luang Prabang!), she made what would have been a very good stay in Luang Prabang become an excellent one.
The free loaner bicycles, the 24-hour coffee/tea in the lobby area, and very reasonably priced laundry service were also very handy ameneties. The location was also perfect for us--very easy walk to anywhere in town, just a couple blocks from Utopia bar and other cool restaurants, but still felt relatively quiet, being tucked back in an alley.
If I'm ever back in Luang Prabang, this will definitely be where I stay!