We stayed two nights at Gotha -- once upon our arrival, and once the night before we flew back from Torino. The service at the front desk is friendly and helpful. There's not much within walking distance at night except a pizzeria that's about 10 minutes away by foot.
The beds are a little low, so if you have trouble sitting/standing, that might prove to be an issue (as it was for our parents).
We would NOT recommend the quadruple room. Spend the extra ~20 and get two separate double rooms. They are newer, more comfortable, and better maintained, and the price differential makes it almost a no-brainer decision.
Overall, an adequate, no-frills, and reasonably priced hotel that serves its purpose of a night's stay near the airport.