Wanted: House for the Weekend

we are looking to rent a house for my granddaughter's first communion party...we have elderly relatives (in their 90s), so it needs to be a house on ground level...or at least with the living area on ground level.
Not necessarily on the beach, but near. Not for a group to sleep but for a Sunday after church service luncheon.
anyone know of a place that can be rented just for the weekend this time of year. We need it April 30 and May 1st.
thanks--