Pretty popular place located in the middle of Roppongi, open almost 24/7. Nice place to have a relaxed meal at a low cost, even before/after clubbing in this area. Always crowded. If you don't know where to go to eat in Roppongi, this is the simplest answer. They have other dishes than Udon and alcohol drinks too, so you can stay long if you want to. Definitely a safe option for travelers and visitors.
My rating: 3.5
Tsurutontan (Roppongi branch)
Website | Tabelog | Branches | 03-5786-2626
Address: 3-14-12 Roppongi, Minato-ku, Tokyo
Access: 3-4 minutes from Roppongi station
Budget: 1,000 JPY or more