There are a lot of things that you can do during the Holy Week. Those who are practicing the Catholic faith observe some Lenten traditions such as church visit, station of the cross, Pabasa and similar other activities. Some observe fasting and spiritual retreat for healing and spiritual direction. I’m not familiar with retreat houses, which you can visit this Lenten season, maybe you check with your parish priest about retreat houses.
For relatives who are physically unwell to visit different churches can still observe the Lenten activities by watching Visita Iglesia (http://visitaiglesia.net/html/visita_iglesia.html) and Pasyon
(http://visitaiglesia.net/html/pasyon.html) from the following links. Since its holiday next week, you can also surprise them with chocolate get well gifts.