If you're looking for a DC basement apartment in a great neighborhood with consistent air conditioning, this apartment will work for you.
For us, a family of four who needed to use facilities such as a dishwasher, washing machine, bathtub, etc, (all listed in the listing) this apartment was very disappointing. We arrived to find dirty dishes, mold in the coffee maker, and a kitchen lacking in basics such as glasses (we later found them in the broken dishwasher) and a cutting board. Tedd was nice, and left the key for us in door. But when we tried to put the key back into the lockbox (his instruction was to always leave the single key in the lockbox), it was difficult/impossible to use. We couldn't reliably put the key in, knowing we would be able to lock it in and get it out at the end of the day. The bathtub didn't work for baths -- we needed to fill it using the shower and a piece of plastic from the kitchen as a stopper. Even basic things like the lamp in one of the bedrooms were broken, and there were few/no drawers/closets.
Tedd was very personable, and we dealt with him primarily in relation to the parking. Be aware that by renting his parking spot, he may be parked behind you, so you can not necessarily move the car when you need to.
For us, this apartment was uncomfortable and very disappointing, and we made a decision not to spend our vacation asking for help and trying to fix all the problems. Our time in DC was too valuable to us for us to spend it focused on our rental.