Gregory's place is in a great location, very close to more than one metro stop and several cafes/shops. The building has an elevator, which helps greatly if you have heavy luggage like we did. His home is equipped with everything you could possibly need. Excellent communication and fast check-in. His friend Jonathan met us there when we arrived. He was very kind and quick to respond when we checked-out and realized we had forgotten our passports halfway to the train station. Highly recommend.