I booked the hotel as part of an ebookers package.

Good points:
1) Clean - credit to the staff!
2) Welcoming - front desk was English speaking and helpful.
3) Location - excellent for downtown shopping or dive shops.

Bad points:
1) Tired and worn fixtures and fittings.
2) Kitchen - limited cooking utensils (2 rings on cooker).

I stayed in room 35 which had a great view of a wall! This made it difficult to see what the weather was like as you couldn't see any sky. Also the windows were covered in spots of paint from the outside.
The A/C worked well but there was a gap around it so I'm sure a few mosquitos came in due to this.
The breakfast was good including fruit and pastries but I often had to leave for my dives at 07:30am so it was often missed.
Make sure you take enough dollar bills for tips as you seem to tip everyone here - being from the UK I'm not used to this.

Here is my take on Suites Bahia. The front desk is quiet, efficient and friendly. The hotel is very clean and well run. They delivered phone messages promptly. Do not stay in rooms 21, 31, and 41 as the HVAC system for the stores is just outside the windows. Free internet in the lobby, as well as newspapers, books and magazines. No pool. I got the room for 35 a night as part of a package 6 months ago, or I would have insisted on moving my room, 41. The bed was hard even for Mexico. However, I would stay here again solo or with a dive buddy. The hotel also provides coffee, juice, fresh fruit, toast, yoghurt and pastries each morning at 7:30.Walking distance to all of central Cozumel. Just across the street from a gelato restaurant, Chi chinese restaurant, pizza hut and the Aldora pier where several dive operators pick up.

Expect basics and you'll be ok. It is a clean, friendly hotel located right near the downtown square. Right accross the street from the downtown cruise ship pier. Several other Scuba Diving couples were staying there and did business with many of the downtown dive shops on Cozumel. We had a balcony and a stove top and fridge in our room. We were able to get food and supplies from a local store and cook several meals in our room. We also walked to restaurants in the downtown square as well as some just 3 blocks away that were local family restaurants where meals were $4.00.

Friendly staff. Clean (saw them cleaning rooms daily that were vacant), and basic accomodations. We will definately stay there again.

If you want a luxury hotel, this is not it. On the other hand, if you want a Mexican hotel, rather than the resorts, which keep you virtually a prisoner, you will find this quite satisfactory. The rooms have a small kitchen, a king sized bed and a double bed, and cable TV. The people at the desk speak excellent English, and there is a computer in the lobby which you can use for free. Breakfast, also in the lobby, consists of coffee, sweet rolls, and fruit. The floor tiles are worn, but clean. Everything of interest is in easy walking distance. The hotel is about half way between the cruise ship terminal and the dock for the boats going out for diving and to the mainland-- where you can see a huge Mexican flag. If you have a room on the front of the hotel, you can observe all this from your room. All the main shops and restaurants are along the street beside the sea or on some side streets. Most sell the usual souvenirs, luxury brand goods, but most of all diamonds and silver. Restaurants and fast food places abound. I suspect the best prices on all goods would be those away from the cruise terminal (I am not a shopper). The price is fantastic; however, you should check all the online reservation services as the prices vary considerably.