Stayed here over xmas - nicely appointed hotel right in the heart of the old city. Ideal for exploring the old city - One slight niggle is the car parking which is at the opposite side to the entrance - if approaching by car go to the garage door first - ring the bell - wait for the door to open and park. The car park is entered by going down in a lift (in your car) If you go to the front of the hotel you will end up in a mile detour to get back to the garage - that said the hotel was excellent. The spa is the best in cadiz and a real bonus after a day walking the city
Rooms looked out over a courtyard Staff were very helpful

We walked to hotel from train station, about 8 blocks, get a map but it's an easy walk. The hotel is in a good location to explore the compact old town of Cadiz. The rooms were nicely sized and well appointed with free wi-fi. We did not try the spa as we only stayed one night but it looked like there were many options to choose. The front desk was very helpful with recomendations on stops - go to top of watchtower as well as top of cathedral. We found a great restaurant on San juan de dias square serving grilled fish - mmm, best dinner on a 10 day trip - Restaurant El Sardinero. You can see everything in one day and Cadiz is a nice diversion from Seville or Madrid and nicer than Costa del Sol

Wanted a hotel in the old town of Cadiz and decided on the Hotel Spa Senator. We arrived by train and actually walked from the station to the hotel, which really isn't that far. We did this after reading that the hotel was hard to find by car.
The hotel is indeed in a narrow street but do not be fooled once inside the hotel opens into a large airy patio.
The rooms are large and very well equiped. The beds were a bit on the hard side, but that is down to personal preference so would not mark that as a critisism
From the hotel you are straight onto the old town of Cadiz. The streets are lively and full of shops, cafes and resturants. The only slight down side to Cadiz is that it is the home of Tapas and most of the menus are just that, Tapas.
We didn't use the spa facillities of the hotel, only being in Cadiz for 2 days so cannot comment on them, but the hotel was everything we wanted. It was clean, comfortable and ideally positioned to visit the sights of the old town.
Good value for money in a hotel, which after all is a city centre facillity.

Hotel is in good location. Room OK, although NOT 4 star. Were given a 1 hour spa voucher each although did not have time to use this.