Nashik is very well connected to Mumbai by road and it's just a 3 hour drive away. You can book a cab to Nashik from Mumbai Airport. Both pre-paid and post-paid options are available. Please enquire at arrivals, you will surely get many options!
Its a good, no frills, hotel and value for the price. Rightdown the fly over. Not a five star; but a.nice bar and a poolside restaurant. Rooms are also good. Moreover, there are plenty of veg and non veg restaurants in the vicinity. Having said that, Nashik has a lot of hotels. If you are travelling alone, Ginger in the city centre and if you can pay a little more, Express Inn are reasonable options.