Family run Otel Karaman is on a quiet sidestreet in central Tatvan, next to the Hotel Crater, 100m south of the PTT office. Small clean rooms with new bathrooms. Some have lake views. Very good kahvalti breakfast included.
WiFi & 400 cable channels (but only one in English - Ch. 353)
English speaking Owner/Manager Mecin and his son are very helpful with local advice.
Beer, wine and spirits are available at the Carrefour next to the Post office.
Excellent and inexpensive fish restaurant overlooking the shoreline and port on the top floor of the modern mall opposite the hotel.