I've been boarding for over 20 years. Guests of various fairs and congresses / conferences. My apartment is close to the city in 5 minutes to the city center and 5 minutes to the fair. Subway station in about 50m distance. The apartment is on the 3rd floor (without elevator) but for the previous guests this was not a problem. It can sleep 2 people in the living room on the sofa bed (about 1.40 x 2.10m). Bathroom and toilet are separate but must be shared with me and the respective additional guests. So far this has not been a problem with my guests. It is offered extensive breakfast. TV in every room. Internet access is available. Hand / bath towels are provided and the hair dryer can be shared.