The Portsmouth and Southsea Hoteliers Association has been in existence for over 40 years. Establishments range from Hotels, Luxury Guest House and small B&Bs. Although ratings vary, all members aim to provide a warm welcome and a friendly personal service that is sometimes lacking in larger establishments. See their website for a list of accommodation in the area.
We also recommend the G! Boutique Hotel for a fantastically different experience and excellent customer service.