My wife and I had a great time staying at Manuel and John's place. It was incredibly nice and comfortable and they had lots of resources for things to see around town. While we didn't use the bikes (because the rain wouldn't stop) they would have been helpful for getting around the National Mall area. They even made us some delicious biscuits on our first day before we had a chance to do any shopping. We will definitely look them up if we end up back in DC!