There's a restaurant on site. Free breakfast is served. Public spaces have free WiFi. A vending machine, tour/ticket assistance, and coffee/tea in a common area are also featured at Nissin Namba Inn.
All the staff were super nice and helpful - the check-in and out processes were very smooth, and the hotel is located in a very convenient area. It is less than 10 minutes' walk from the closest station, and several convenience stores are nearby. It doesn't take too long by foot to get to Namba Walk and Dotonbori area, so if you are willing to walk, you will save transportation fees. The room was very clean and spacious, but it was a bit dry since it was the Winter season. I would love to stay here again!